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        Publications





2023

[104] "Crossing of the Branch cut: the topological origin of a universal 2π-phase retardation in non-hermitian metasurfaces"
R Colom, E Mikheeva, K Achouri, J Zuniga-Perez, N Bonod, O JF Martin, S Burger, and P Genevet

Laser Photonics Rev. 2023, 2200976 (2023)

A universal 0 to 2π-phase gradient of an output channel as a function of the real frequency excitation is thus realized whenever the discontinuity branch bridging a zero and a pole, that is, a pair of singularities, is crossing the real axis.

[103] "Uniform Huygens metasurfaces spectral tuning as a mass-production perspective"
E Mikheeva, R Colom, P Genevet, F Bedu, I Ozerov, S. Khadir, G. Baffou, R. Abdeddaim, S. Enoch, and J. Lumeau
Laser Photonics Rev. 2023, 2200976 (2023)

We suggest a novel way to design and fabricate phase-gradient Huygens metasurfaces using laser-annealing of uniform particles made of As2S3 chalcogenide glass.

[102] "Super-reflector enabled by non-interleaved spin-momentum-multiplexed metasurfaces"
He-Xiu Xu, Guangwei Hu, Xianghong Kong, Yanzhang Shao, Patrice Genevet, and Cheng-Wei Qiu. 
Light Science & Applications 12, 78 (2023)
we propose a spin-momentum multiplexed paradigm called a super-reflector enabling on-demand control of both retroreflections and anomalous reflections using a non-interleaved single-celled metasurface.



2022

[101] "Metasurface for complete measurement of polarization Bell state"
Z. Gao, Z. Su , Q. Song, P. Genevet and K. E. Dorfman. 
Nanophotonics, doi/10.1515/nanoph-2022-0593 (2022)
Leveraging on a pair of binary-pixel metasurfaces, we demonstrate direct measurement of all four polarization Bell states.

[100] "Exploiting Extraordinary Topological Optical Forces at Bound States in the Continuum"
H. Qin, Y. Shi, Z. Su, G. Wei, Z. Wang, X. Cheng, A. Q. Liu, P. Genevet, Q Song. 
Science Advancess, 8, eade7556 (2022)
We show that topological features are observed in optical forces within the vicinity of BIC, around which the force vectors wind in the momentum space. The topological force carries force topological charge and can be used for trapping and repelling nanoparticles.

[99] "Spin-decoupling of Vertical Cavity Surface-Emitting Lasers with complete phase modulation using on-chip integrated Jones matrix metasurfaces"
P-N Ni, P Fu, P-P Chen, C. Xu, Y-Y Xie, and P Genevet
Nature Communications, 13,7795 (2022)
We design and experimentally validate the performance of CMOS compatible Jones matrix metasurfaces monolithically integrated with standard VCSELs for on-chip spin-decoupling and phase shaping. Our approach enables accessing the optical spin states of VCSELs in an ultra-compact way with previously unattainable phase controllability. By exploiting spin states as a new degree of freedom for laser wavefront engineering, our platform is capable of operating and reading-out the spin-momentum of lasers associated with injected spin carriers, which would potentially play a pivotal role for the development of emerging spin-optoelectronic devices.


[98] "Inverse design of nanophotonics devices and materials"
PR Wiecha, AY Petrov, P Genevet, A Bogdanov 
Photonics and Nanostructures- Fundamentals and Applications, 10108413 (2022)

[97] "Metasurface-enhanced light detection and ranging technology"
 R. J. Martins, E. Marinov, MA B Youssef, C. Kyrou, M. Joubert, C. Colmagro, V. Gâté, C. Turbil, P-M Coulon, D. Turover, S. Khadir, M. Giudici, C. Klitis, M. Sorel & P. Genevet. 
Nature Communications 13, 5724 (2022)
Here, we report on an advanced LiDAR technology that leverages from ultrafast low FoV deflectors cascaded with large area metasurfaces to achieve large FoV (150°) and high framerate (kHz) which can provide simultaneous peripheral and central imaging zones.

[96] "Les métasurfaces optiques pour les lidars à large champ et à haute cadence d’imagerie"
 R J Martins, E Marinov, A B Youssef, C. Kyrou & P. Genevet. 
Photonique 115 41-45 (2022)
French article discussing the utilisation of Metasurfaces for LiDAR imaging.

[95] "Susceptibility synthesis of arbitrary shaped metasurfaces"
 N. Lebbe, S. LAnteri, S.Y. Golla and P. Genevet. 
Phys. Rev. B 106, 035110 (2022)
We address theoretically the problem of electromagnetic field transition conditions at conformal interfaces to achieve surface-topography-dependent transmitted and reflected fields.

[94] "Getting topological photonics out of the laboratory"
 Cristiano Matricardi, Cephas Small, Lina Persechini, Bo Zhen, Andrea Blanco Redondo, Alexander Szameit, Patrice Genevet. 
Nature Communications 13, 2249 (2022) invited
In this Q&A, we reflect on opportunities to apply topological photonics concepts for real world applications.

[93] 
"Space &/or Time modulation of light with metasurfaces: recent progress and future prospects"

 E. Mikheeva, C. Kyrou, F. Bentata, S. Khadir, S. Cueff and P. Genevet, 
ACS Photonics doi.org/10.1021/acsphotonics.1c01833 (2022)
In this Perspective, we discuss the different opportunities offered by time-modulated metasurfaces for dynamic wavefront engineering and space-time photonics.

[92] "Vectorial metasurface holography"
 Q. Song, X. Liu, CW Qiu and P. Genevet, 
Applied Physics Reviews 9 (1), 011311 (2022)
we review latest works on vectorial wavefront engineering with metasurfaces.



2021

[91] "Aberration-corrected large-scale hybrid metalenses"
 R. Sawant, D. Andren, RJ. MArtins, S. Khadir, R Verre, M. Käll and P. Genevet, 
Optica 8, 1405-1411 (2021)
we address the aberration issues in imaging systems, compensating for chromatic dispersion and correcting for monochromatic aberrations with centimeter-scale hybrid-metalenses. We demonstrate a correction of at least 80% for chromatic aberration and 70% for spherical aberration.

[90] "Plasmonic Topological Metasurface by Encircling an exceptional Point"
 Q. Song, M. Odeh, J. Zuniga Perez, B. Kanté and P. Genevet, 
Science 373, 1133-1137 (2021)
Recognizing that metasurfaces are also open systems interacting with the environment, we designed metasurfaces that exploit those non-Hermitian properties such that they can encircle an exceptional point. This work propse an additional knob in designing metasurfaces for wave front engineering. 

[89] "Reconstruction of multidimensional nonlinear polarization response of Pancharatnam-Berry metasurfaces"
 Z. Gao, P. Genevet, G. Li and K. E. Dorfman
Physical Review B  104, 054303 (2021)
In this paper, we propose to reconstruct the multidimensional nonlinear polarization response of a nanomaterial using heterodyne measurements.

[88] "Optimization of metasurfaces under geometrical uncertainty using statistical learning"
 M.MR. Elsawy, M. Binois, R. Duvigneau, S. Lanteri and P. Genevet
Optics Express, 29, 19, 29887-29898 (2021)
In this paper, we propose a novel optimization methodology to account for the manufacturing errors related to metasurface designs.
 

[87] "Multi-objective statistical learning optimization of RGB metalens"
 M.MR. Elsawy, A. Gourdin, M. Binois, R. Duvigneau, D. Felbacq, S. Khadir, P. Genevet and S. Lanteri
ACS Photonics, 8, 8, 2498-2508 (2021)
In this paper, we propose a global multiobjective optimization technique that utilizes a statistical learning method to optimize RGB metalenses. 

[86] "Broadband decoupling of intensity and polarization with Vectorial Fourier metasurfaces"
 Q. Song, A. Baroni, P. C. Wu, S. Chenot, V. Brandli, S. Vezian, B. Damilano, P. De Mierry, S. Khadir, P. Ferrand, and P. Genevet
Nature Communications, 12, 3631 (2021)
In this paper, we propose a general vectorial encryption method, which enables arbitrary far-field light distribution with the local polarization, including orientations and ellipticities, decoupling intensity from polarization across a broad bandwidth using geometric phase metasurfaces. 

[85] "Nanophotonics for Light Detection and Ranging Technology"
 I. Kim, R. Juliano Martins, J. Jang, T. Badloe, S. Khadir, P. Genevet and J. Rho 
Nature Nanotechnol. (2021) https://doi.org/10.1038/s41565-021-00895-3
In this review, we summarize the progress in nanotechnology for LiDAR applications.

[84] "Polarization-insensitive 3D conformal-skin metasurface cloak"
H-X Xu, G. Hu, Y. Wang, C. Wang, M. Wang, S. Wang, Y. Huang, P. Genevet, W. Huang & C.W. Qiu
Light Science  & Applications, 10, 75 (2021)
In this work, we report a conformal-skin metasurface carpet cloak that works for arbitrary state of polarization.

[83] "Backward Phase-matched Second Harmonic Generation from Stacked Metasurfaces"
T. Stolt, J. Kim, S. Héron, A. Vesala, M.J. Huttunen, R. Czaplicki, M. Kauranen, J. Rho and P. Genevet
Physical Review Letters, 126, 033901 (2021)
We demonstrate phase-matched second-harmonic generation (SHG) from three-dimensional metamaterials consisting of stacked metasurfaces. To achieve phase matching, we utilize a novel mechanism based on phase engineering of the metasurfaces at the interacting wavelengths, facilitating phase-matched SHG in the unconventional backward direction.

[82] "Scattering by lossy anisotropic scatterers: a modal approach"
N. Kossowski, P.Y. Chen, Q.J. Wang, P. Genevet and Y. Sivan
Journal of Applied Physics, 129, 113104 (2021)
In this work, we extend the generalized normal mode expansion to lossy and anisotropic scatterers.

[81] "On‐Chip Generation of Structured Light Based on Metasurface Optoelectronic Integration"
Q​‐H Wang, P-N Ni, Y‐Y Xie, Q Kan, P‐P Chen, P Fu, J Deng T‐L Jin, H‐D Chen, H W Howard Lee, C Xu and P. Genevet
Laser & Photonics reviews, online(2021)
In this work, generation of structured light is implemented at an ultracompact wafer‐level through the monolithic integration of metasurface with standard vertical cavity surface‐emitting lasers (VCSELs).

[80] "Bandwidth-unlimited Polarization-Maintaining Metasurfaces"
Q. Song , S. Khadir, S. Vézian, B. Damilano, P. De Mierry, S. Chenot, V. Brandlï, and P. Genevet
Science Advances 7 (5), eabe1112 (2021)
A general method of designing polarization and angular nondispersive metasurface with unlimited bandwidth is provided.

[79] "Metasurface optical characterization using quadriwave lateral shearing interferometry"
S. Khadir, D. Andrén ,  R. Verre ,  Q. Song ,  S. Monneret ,  P. Genevet ,  Mikael Käll , and G. Baffou
ACS photonics (2021)  https://doi.org/10.1021/acsphotonics.0c01707 
We demonstrate how quadriwave lateral shearing interferometry (QLSI), a quantitative phase microscopy technique, can achieve full optical characterization of metasurfaces of any kind, as it can probe the local phase imparted by a metasurface with high sensitivity and a spatial resolution that reaches the diffraction limit.

[78] "Dynamic phase manipulation of vertical-cavity surface-emitting lasers via on-chip integration of microfluidic channels"
Z. Zhao, Y. Xie, G. Pan, P. Ni, Q. Wang, Y. Dong, L. Hu, J. Sun, H. Chen, C. Xu, and P. Genevet
Optics Express , 29, 1481-1491 (2021) 
In this work, we incorporate the emerging microfluidic technologies into the conventional VCSELs through a monolithic integration approach, enabling dynamic phase control of lasing emissions with low power consumption and low thermal generation.




2020

​

[77] "Reconfigurable Flat Optics with Programmable Reflection Amplitude Using Lithography-Free Phase-Change Materials Ultra Thin Films"
S. Cueff, A.Taute, A. Bourgade, J. Lumeau, S. Monfray, Q. Song, P. Genevet, X. Letartre and L. Berguiga
Advanced Optical Materials, 2020, 2001291 
We demonstrates that properly designed systems comprising deeply subwavelength GeSbTe (GST) films, a dielectric spacer, and a metallic mirror produce a dynamic modulation of light in the near-infrared from very strong reflection (up to R ≈ 80% ) to perfect absorption (A >> 99.995%) by controlling the crystalline state of the phase change material.


[76] "Revealing topological phase in Pancharatnam-Berry metasurfaces using mesoscopic electrodynamics "
 Z. Gao, S. Golla, R. Sawant, V. Osipov, G. Briere, S. Vézian, B. Damilano, P. Genevet and K. E. Dorfman 
Nanophotonics, Ahead of Print (2020)
We provide a  mesoscopic description of topological metasurfaces. 

[75] "Numerical Optimization Methods for Metasurfaces"
 M. M. R. Elsawy, S. Lanteri, R. Duvigneau, J. A. Fan & P. Genevet 
Laser & Photonics Reviews 1900445 (2020)
This manuscript reviews the different numerical optimization methods for the design of metasurfaces. 

[74] "Independent phase modulation for quadriplex polarization channels enabled by chirality-assisted geometric-phase metasurfaces"
 Y. Yuan, K. Zhang, B. Ratni, Q. Song, X. Ding, Q. Wu, S. N. Burokur & P. Genevet 
Nature Communications ,11, 4186 (2020)
We introduce the concept of Chirality-Assisted Phase delay as a new degree of freedom to control the amplitude phase and polarization properties of metasurfaces, leading to full and independent control of all four circular output polarization channels of vectorial far field patterns. 


[73] "Printing polarization and phase at the optical diffraction limit: near and far field optical encryption"
 Q. Song, S. Khadir, S. Vézian, B. Damilano, P. De Mierry, S. Chenot, V. Brandlï, R. Laberdesque, B. Wattellier and P. Genevet 
Nanophotonics, Ahead of Print (2020)
Quadrilateral shearing wave interferometry is used for the decryption of metasurface phase response. Functional binary quick response phase codes with phase values as low as 15° are realized and characterized. 


[72] "Nonlocality Induced Cherenkov Threshold"
 H. Hu, X. Lin, J. Zhang, D. Liu, P. Genevet, B. Zhang and Y. Luo 
Laser & Photonics Reviews 2000149 (2020)
The effect of nonlocality adds a new degree of freedom to engineer Cherenkov thresholds in hyperbolic metamaterials. 


[71] "Ptychography retrieval of fully polarized holograms from geometric-phase metasurfaces"
 Q. Song, A. Baroni, R. Sawant, P. Ni, V. Brandli, S. Chenot, S. Vézian, B. Damilano, P. de Mierry, S. Khadir, P. Ferrand & P. Genevet 
Nature Communications ,11, 2651 (2020)
A vectorial ptychography technique is introduced for mapping the Jones matrix to monitor the reconstructed metasurface output field and to compute the full polarization properties of the vectorial far field patterns


[70] "Long-lifetime coherence in a quantum emitter induced by a metasurface"
 E. Lassalle, P.Lalanne, S. Aljunnid, P. Genevet, B. Stout, T. Durt and D. Wilkowski
Phys. Rev. A,
101, 013837 (2020)


[69] "Metasurface-Integrated Vertical Surface-Emitting lasers for programmable directional lasing emission"
 Y.Y. Xie, P.N. Ni, Q.H. Wang, Q. Kan, G. Briere, P.P. Chen, Z.Z. Zhao, A. Delga, H.R. Ren, H.D. Chen, C. Xu and P. Genevet 
Nature Nanotechnology 15, 125-130 (2020) 
VCSEL has experienced a soaring development over the last 30 years, becoming the most versatile laser for applications in optical communication, instrumentation, manufacturing and sensing. Their integration with metasurfaces enables wafer-scale wavefront shaping, offering exciting new opportunities.


[68] "Mid-Infrared Grayscale Metasurface Holograms"
 K. Wu, N. Kossowski, H. Qiu , H. Wang, Q.J. Wang and P. Genevet
Applied Sciences 10(2), 552 (2020)

This article reports polarization-independent holograms working with high-efficiency at wavelength 4.7 μm.
https://www.mdpi.com/2076-3417/10/2/552/pdf



2019

[67] "Global optimization of metasurface designs using statistical learning methods"
 M Elsawy, S Lanteri, R Duvigneau, MS Mohamed, G Brière, and P. Genevet 
Scientific Reports , 9, 17918 (2019)

Optimization of the performance of flat optical components, also dubbed metasurfaces, is a crucial step towards their implementation in realistic optical systems. In this work, we exploit two advanced optimization techniques based on statistical learning and evolutionary strategies together with a fullwave high order Discontinuous Galerkin Time-Domain (DGTD) solver to optimize phase gradient metasurfaces. We then demonstrate optimal designs for GaN semiconductor phase gradient metasurfaces operating at visible wavelengths.
https://www.nature.com/articles/s41598-019-53878-9.pdf

[66] "Optical Phase Transition in Semiconductor Quantum Metamaterials"
A. Hierro, M.M. Bajo, M. Ferraro, J. Tamayo-Arriola,  N. Le Biavan, M. Hugues, J. M. Ulloa, M. Giudici, J.M. Chauveau and P. Genevet 
Physical Review Letters , 123, 117401 (2019)

Leveraging on the intersubband resonances in heterostructured semiconductors, we demonstrate all possible optical regimes, ranging from classical dielectric and metal to hyperbolic metamaterial types 1 and 2. As a demonstration, we prove that the negative refraction effect can occur at a designed frequency by controlling the electronic quantum confinement.
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.117401


[65] "Metasurfaces Orbital Angular Momentum Holography''
H. Ren, G. Briere, X. Fang, P. Ni, R. Sawant, S. Héron, S. Chenot, S. Vézian, B. Damilano, V. Brändli, S. A. Maier, and P. Genevet
​Nature Communications, 10, 2986 (2019)

Here we demonstrate metasurface orbital angular momentum holography by utilizing strong orbital angular momentum selectivity offered by meta-holograms consisting of GaN nanopillars with discrete spatial frequency distributions. The reported orbital angular momentum-multiplexing allows lensless reconstruction of a range of distinctive orbital angular momentum-dependent holographic images.
https://www.nature.com/articles/s41467-019-11030-1

[64] "Gate Tunable Emission of Exciton–Plasmon Polaritons in Hybrid MoS2-Gap-Mode Metasurfaces"
P Ni, A de Luna Bugallo, V M. Arellano Arreola, M F Salazar, E Strupiechonski, V Brändli, R Sawant, B Alloing and P. Genevet, ACS photonics, ASAP https://doi.org/10.1021/acsphotonics.9b00433
In this contribution, we couple the excitonic resonance of atomic thin MoS2 monolayers with gap-surface-plasmon (GSP) metasurfaces, and demonstrate selective enhancement of the exciton–plasmon polariton emissions. We further demonstrate tunable emissions by controlling the charge density at the interface through electrically gating in the Metal-Oxide-Semiconductor (MOS) structure.
https://doi.org/10.1021/acsphotonics.9b00433


[63] "Hybrid MoS2-gap-mode metasurfaces photodetectors"
P Ni, A de Luna Bugallo, X Yang, V A Arreola, M F Salazar, E Strupiechonski, B Alloing, C-X Shan and P. Genevet,
Journal of Physics D: Applied Physics, in press https://doi.org/10.1088/1361-6463/ab2aba

In this work, we are proposing an integration of metasurfaces with 2D semiconductor materials to achieve polarization sensitive, fast-response photodetectors. The reported devices are among the most compact hybrid MoS2-gap-plasmon metasurface detectors.  
https://iopscience.iop.org/article/10.1088/1361-6463/ab2aba

[62] "Enhanced Second-Harmonic Generation in a SingleMicrowire Based on Localized Surface Plasmon"
J. Li, H. Zhu, Z. Chen, Y. Huang, H. Zheng, Z. Tang, X. Gui, S. Wang, Z. Tang, P. Ni, and P. Genevet, 
Phys. Status Solidi B, 1900075 (2019)
Randomly distributed Ag nanoparticles are fabricated on a template plate and used to enhance the SHG in microwires through localized surface plasmon (LSP). 

https://onlinelibrary.wiley.com/doi/abs/10.1002/pssb.201900075

[61] "An Etching-Free Approach Toward Large-Scale Light-Emitting Metasurfaces"
G. Briere, P. Ni, S. Héron, S. Chenot, S. Vézian, V. Brandli, B. Damilano, J-Y. Duboz, M. Iwanaga and P. Genevet 
Advanced Optical Materials, 1801271 (2019)
An etching-free process is presented that combines nanoimprint and selective area sublimation of a semiconductor material to realize centimeter-scale metalenses of high optical quality. Use of gallium nitride is chosen for this demonstration, as it is a widespread semiconductor which can be transparent and active in the visible. The sublimation leads to reduced surface roughness and defects compared to reactive ion etching. As a result, the devices show enhanced photoluminescence efficiency with respect to etched devices.
https://onlinelibrary.wiley.com/doi/full/10.1002/adom.201801271


[60] "Room Temperature Electrically Driven Ultraviolet Plasmonic Lasers"
X. Yang, P.-N Ni, P.-T. Jing, L.-G. Zhang, R.-M. Ma, C.-X. Shan, D.-Z. Shen, and P. Genevet 
Advanced Optical Materials, 
1801681 (2019)
Benefiting from the large exciton binding energy and large oscillator strength of zinc oxide (ZnO) gain media, an optically pumped ultraviolet (UV) plasmonic laser is demonstrated from a hybrid metal–insulator–semiconductor structure, in which a magnesium oxide (MgO) gap layer plays a critical role in reducing the metallic loss. Further optimizing the thickness of the MgO gap layer and ZnO active layer, room temperature electrically driven UV plasmonic lasers are realized under the injection of electrical carriers through the metallic electrode of the hybrid structure.
https://onlinelibrary.wiley.com/doi/abs/10.1002/adom.201801681?af=R
​

[59] "Optimization and uncertainty quantification of gradient index metasurfaces"
N. Schmitt, N. Georg, G. Briere, D. Loukrezis, S. Héron, S. Lanteri, C. Klitis, M. Sorel, U. Römer, H. De Gersem, stéphane Vézian and P. Genevet 
Optical Materials Express 
Vol. 9 Issue 2, PP 892-910 (2019)
We report on a computational methodology to optimize metasurface designs. We complement this computational methodology by quantifying the impact of fabrication uncertainties on the experimentally characterized components. This analysis provides general perspectives on the overall metaoptics performances, giving an idea of the expected average behavior of a large number of devices.
https://www.osapublishing.org/ome/abstract.cfm?uri=ome-9-2-892



2018

[58] "Mitigating Chromatic Dispersion with Hybrid Optical Metasurfaces"
R. Sawant, P. Bhumkar, A.Y. Zhu, P. Ni, F. Capasso and P. Genevet
Advanced Materials
DOI: 10.1002/adma.201805555
Here, the dispersion of refractive components is corrected by leveraging the inherent dispersion of metasurfaces. Hybrid refractive-metasurface devices, with nondispersive refraction in the visible, are experimentally demonstrated. The dispersion of this hybrid component, characterized by using a Fourier plane imaging microscopy setup, is essentially achromatic over about 150 nm in the visible. Broadband focusing with composite plano-convex metasurface lenses is also proposed.
https://onlinelibrary.wiley.com/doi/10.1002/adma.201805555


[57] "Outfitting next generation displays with optical metasurfaces"
I.Kim, G. Yoon, J. Jang, P. Genevet, K.T. Nam, and J. Rho
ACS Photonics
DOI: 10.1021/acsphotonics.8b00809 (2018)
we briefly introduce the working mechanism of metasurface holograms and colorations, and review state-of-the-art techniques in each field from perspective of materials, functionalities, and fabrication methodologies towards real-life display applications. Finally, we conclude on the potential outcome and outlook on this technology and highlight the key challenges to be solved for next generation display.
https://pubs.acs.org/doi/10.1021/acsphotonics.8b00809


[56] Special issue on "Metasurfaces: Physics and Applications"
F. Ding, P. Genevet and S.I. Bozhevolnyi,
Applied Sciences, 8, 1727 (2018
)
This special issue is launched to provide a possibility for researchers in the area of metasurfaces to highlight the most recent exciting developments and discuss different metasurface configurations in depth, so as to further promote practical applications of metasurfaces.

[55] Modelling of Freeform conformal Metasurfaces
K. Wu, Q.J. Wang, P. Coquet and P. Genevet,
Nature Communications 
 9:3494 (2018)      https://www.nature.com/articles/s41467-018-05579-6.pdf
We present a method for designing ultrathin optical components - commonly called metasurfaces - of arbitrary shapes. The method relies on an optical transformation technique used in the field of metamaterials. With this results, it is now possible of predicting and designing the optical response of metasurfaces conformal to non-planar objects. This method would enable new design opportunities for free-form optics, illusion optics, radar and military camouflage.
​
​


2017

[54] Les métasurfaces, des composants optiques fonctionnels ultra-minces
P. Genevet, P. Chavel, N. Bonod,
Photoniques 87, 25 (2017)  https://doi.org/10.1051/photon/20178725
Les composants optiques réfractifs et diffractifs façonnent le front d’onde en jouant sur le déphasage accumulé lors de la propagation de la lumière. Des nanostructures gravées à l’interface entre deux matériaux permettent d’introduire une polarisation de surface supplémentaire qui élargit le champ de créativité vers de nouveaux composants non-réfractifs. Ces interfaces optiques, ou métasurfaces, ont des propriétés et des performances souvent inattendues qui peuvent s’avérer intéressantes pour des applications en optique embarquée.

[53] Freestanding dielectric nanohole array metasurface for mid-infrared wavelength applications
J.R.Ong, H.S. Chu, V.H Chen, Y.A. Zhu, P. Genevet,
​Optics Letters 42(13) 2639-2642  (2017)
We designed and simulated freestanding dielectric optical metasurfaces based on arrays of etched nanoholes in a silicon membrane. We also identified the mechanisms responsible for high forward scattering efficiency and showed that these conditions are connected with the well-known Kerker conditions already proposed for isolated scatterers.



[52] Recent advances in planar optics: from plasmonic to dielectric metasurfaces
P. Genevet, F. Capasso, F. Aieta, M. Khorasaninejad, and R. Devlin,
Optica Vol. 4, Issue 1, pp. 139-152 (2017)
This article reviews recent progress leading to the realization of planar optical components made of a single layer of phase shifting nanostructures. After introducing the principles of planar optics and discussing earlier works on subwavelength diffractive optics, we introduce a classification of metasurfaces based on their different phase mechanisms and profiles and a comparison between plasmonic and dielectric metasurfaces.



[51] Anisotropic Surface Plasmon Polariton Generation Using Bimodal V‑Antenna Based Metastructures
D. Wintz, A. Ambrosio, A. Y. Zhu, P. Genevet, and F. Capasso ,
​ACS Photonics 4 (1) (2017) 22-27. Here, through near-field scanning optical microscopy, we study a 1D metastructure comprised of V-antennas in the context of generating asymmetric surface plasmon polariton (SPP) wavefronts.




2016

[50] Measurement of bound states in the continuum by a detector embedded in a photonic crystal
R. Gansch, S. Kalchmair, P. Genevet, T. Zederbauer, H. Detz, A. M Andrews, W. Schrenk, F. Capasso, M. Lončar and G. Strasser,
Light: Science & Applications (2016) 5, e16147; doi:10.1038/lsa.2016.147 
 We directly measure optical bound states in the continuum (BICs) by embedding a photodetector into a photonic crystal slab. Polarization mixing between photonic crystal slab modes was observed and described using a plane wave expansion simulation.



[49]Controlling electromagnetic fields at boundaries of arbitrary geometries
J. Y. H. Teo, L. J. Wong, C. Molardi and P. Genevet
Phys. Rev. A 94, 023820 (2016). We introduce the concept of conformal boundary optics: a design theory that determines the optical response for designer input and output fields at at metasurfaces of arbitrary geometries.



[48] Traditional and emerging materials for optical metasurfaces
Alexander Y. Zhu, Arseniy I. Kuznetsov,  Boris Luk’yanchuk, Nader Engheta, Patrice Genevet
Nanophotonics ISSN (Online) 2192-8614, ISSN (Print) 2192-8606, DOI: 
10.1515/nanoph-2016-0032. In this article, we present a brief review of metasurfaces from a materials perspective, and examine how the choice of different materials impact functionalities ranging from operating bandwidth to efficiencies. We place particular emphasis on emerging and non-traditional materials for metasurfaces such as high index dielectrics, topological insulators and digital metamaterials, and the potentially transformative role they could play in shaping further advances in the field.


[47] Broadband mode conversion via gradient index metamaterials
H. Wang, Y. Xu, P. Genevet, J-H Jiang, H. Y. Chen,
Scientific Reports | 6:24529 | DOI: 10.1038/srep24529 (2016). We propose a design for broadband waveguide mode conversion based on gradient index metamaterials (GIMs). Numerical simulations demonstrate that the zeroth order of transverse magnetic mode or the first order of transverse electric mode (TM0/TE1) can be converted into the first order of transverse magnetic mode or the second order of transverse electric mode (TM1/TE2) for a broadband of frequencies.




2015 
[46] Achromatic Metasurface Lens at Telecommunication Wavelengths
M. Khorasaninejad, F. Aieta, P. Kanhaiya, M. Kats, P. Genevet, F. Capasso,
Nano Letters, DOI: 10.1021/acs.nanolett.5b01727. (2015) We utilize an aperiodic array of coupled dielectric nanoresonators to demonstrate a multiwavelength achromatic lens.



[45] Controlled steering of Cherenkov surface plasmon wakes with a one-dimensional metamaterial
P. Genevet, D. Wintz, A. Ambrosio, A. She, R. Blanchard and F. Capasso, 
Nature Nanotechnology,
doi:10.1038/nnano.2015.137 (2015). Surface plasmon wakes can be created and steered using a one-dimensional metamaterial consisting of rotated nanoslits in which the phase velocity of a running wave of polarization propagates faster than the phase velocity of the surface plasmons.



[44] Holographic metalens for switchable focusing of surface plasmons 
 D. Wintz, P. Genevet, A. Ambrosio, A. woolf and F. Capasso,
Nano Letters, 15, 3585 (2015). We present the design of a new lens based on holographic principles. The key feature is the ability to switchably control SPP focusing by changing either the incident wavelength or polarization.



[43] Multiwavelength Achromatic metasurface optical components by dispersive phase compensation
F. Aieta, M.A. Kats, P. Genevet, and F. Capasso,
Science, 347, 1342-1345 (2015).  We show that dispersion can be overcome with an engineered wavelength-dependent phase shift imparted by a metasurface, and we demonstrate a design that deflects three wavelengths by the same angle.



[42] Optical Metasurfaces for the real world
P. Genevet, invited commentary
Nature Nanotechnology, 10,11-15 (2015) Early-career researchers share their thoughts on how to make use of the ability to manipulate light at the nanoscale.



[41] Holographic optical metasurfaces: a review of current progress
P. Genevet and F. Capasso,
Reports of Progress in Physics, 78 (2), 024401 (2015) We review recent developments in the field of surface electromagnetic wave holography.




2014
[40] Electrically pumped semiconductor laser with monolithic control of circular polarization
P. Rauter, J. Lin, P. Genevet, S. P Khanna, M. Lachab, A. Giles Davies, E. H Linfield and F. Capasso,
Proceedings of the National Academy of Sciences,  111, (52) E5623-E5632 (2014) We present a method for monolithic control of the degree of circular polarization by aperture antennas forming a surface-emitting grating on a semiconductor laser cavity and demonstrate its realization for a terahertz quantum cascade laser.



[39] Twisted Focusing of Optical vortices with Broadband Flat Spiral Zone plates  

H. Liu , M. Q. Mehmood , K. Huang , L. Ke , H. Ye , P. Genevet , M. Zhang , A. Danner , S. P. Yeo , C.-W. Qiu , and J. Teng”,
Advanced Optical Materials doi: 10.1002/adom.201400315 (2014) Nanostructured flat logarithmic-spiral zone plates (LSZPs) are proposed to produce as well as focus optical vortices with a long focal depth in the broadband visible range.



[38] Flat Optics: Wavefronts Control With Huygens’ Interfaces  

  P. Genevet and F. Capasso,
IEEE Photonics 6, 0700404 (2014) Short invited commentary on flat optics



2013 
[37] Aberrations of flat lenses and aplanatic metasurfaces 
  F. Aieta, P. Genevet, M. A. Kats, F. Capasso,
Optics Express, 21, 31530-31539 (2013) A study of optical aberrations for flat lenses based on phase discontinuities is reported.



[36] Vanadium dioxide as a natural disordered metamaterial: perfect thermal emission and large broadband negative differential thermal emittance 

  M. A. Kats, R. Blanchard, S. Zhang, P. Genevet, C. Ko, S. Ramanathan and F. Capasso
Physical Review X, 3 041004 (2013). We experimentally demonstrate that a thin (approximately 150-nm) film of vanadium dioxide deposited on sapphire has an anomalous thermal emittance profile.



[35] Enhancement of the color contrast in ultra-thin highly-absorbing Optical coatings 

  M.A. Kats, S. Byrnes, R. Blanchard, P. Genevet, M. Kolle, J. Aizenberg and F. Capasso,
Applied Physics Letters 103, 101104 (2013). We show that optical coatings, resulting from interference in  highly absorbing dielectric layers on metal substrates, can be augmented by an additional transparent subwavelength layer.



[34] Nanostructured-diffractive optical components for broadband manipulation of light 

  J. Lin, P. Genevet, M.A. Kats, N. Antoniou and F. Capasso.
Nano Letters 13 4269 (2013).  The first two authors equally contributed to this work. We report a new type of holographic interface, which is able to manipulate the three fundamental properties of light (phase, amplitude, and polarization) over a broad wavelength range.



[33] Quantum-Coherence Enhanced Surface Plasmon Amplification by Simulated Emission of Radiation

  K. Dorfman, J. Pankaj, D. Voronine, P. Genevet, F. Capasso and M. O. Scully.
Physical Review Letters
111, 043601 (2013). We investigate surface plasmon amplification in a silver nanoparticle coupled to an externally driven three-level gain medium and show that quantum coherence significantly enhances the generation of surface plasmons.



[32] High-power low-divergence tapered quantum cascade lasers with plasmonic collimators
  R. Blanchard, T. S. Mansuripur, B. Gokden, N. Yu, M. Kats, P. Genevet, K. Fujita, T. Edamura,M. Yamanishi, and F. Capasso,
Applied Physics Letters 102, 191114 ( (2013) Plasmonic collimators are fabricated on the facet of the uncoated lasers without compromising power output, demonstrating the viability of this beam-shaping strategy for high-power lasers.



[31] Generation of two-dimensional plasmonic bottle beams
  P. Genevet, J. Dellinger, R. Blanchard, A. She, M. Petit, B. Cluzel, M. A. Kats, F. de Fornel and F. Capasso,
Optics Express 21, 10295 (2013). By analogy to the three dimensional optical bottle beam, we introduce the plasmonic bottle beam.



[30] "Broad electrical tuning of graphene-loaded plasmonic antennas"
  Y. Yao, M. A. Kats,P. Genevet, N. Yu and F. Capasso.
Nano Letters DOI: 10.1021/nl3047943 (2013). We demonstrate in situ control of antennas using graphene as an electrically tunable load in the nanoscale antenna gap.



[29] Flat Optics: Controlling Wavefronts with Optical Antenna Metasurfaces
  N. Yu, P. Genevet, F. Aieta, M. A. Kats, R. Blanchard, G. Aoust, J-P. Tetienne, Z. Gaburro, and F. Capasso
IEEE Journal of Selected Topics in Quantum Electronics, DOI:10.1109/JSTQE.2013.2241399 (2013). We discuss the optical responses of anisotropic plasmonic antennas and a new class of planar optical components ("metasurfaces") based on arrays of these antennas.



[28] Thermal tuning of mid-infrared plasmonic antenna arrays using a phase change material
  M. A. Kats, R. Blanchard, P. Genevet, Z. Yang, M. M. Qazilbash, D. Basov, S. Ramanathan and F. Capasso
Optics Letters 38, 368(2013). We demonstrate that the resonances of infrared plasmonic antennas can be tuned or switched on/off by taking advantage of the thermally driven insulator-to-metal phase transition in vanadium dioxide (VO2).
​


2012

[27] Holographic Detection of the Orbital Angular Momentum of light with plasmonic photodiodes
  P. Genevet, J. Lin, M. A. Kats and F. Capasso.
Nature Communications 3:1278 doi:10.1038/ncomms2293 (2012). We have integrated holographic plasmonic interfaces into commercial silicon photodiodes, and demonstrated that such devices can selectively detect the orbital angular momentum of light.



[26] Bifurcation Diagram and Control of Localized Laser Structures
  P. Genevet, M. Turconi, S. Barland, M. Giudici and J. R. Tredicce.
Journal of Nonlinear Optical Physics and Materials Vol. 21, No. 3, 1250029 (2012). We study the bifurcation and the stability properties of laser solitons.



[25] Reflection and refraction of light from metasurfaces with phase discontinuities
  F. Aieta, A. Kabiri, P. Genevet, N. Yu, M. A. Kats, Z. Gaburro and F. Capasso
Journal of Nanophotonics 6, 063532 (2012). Discussion on two and three dimensional generalization of the laws of refraction and reflection for both flat and curved metasurfaces.



[24] A Broadband, background free quarter-wave plate based meta-interfaces
  N. Yu*, F. Aieta*, P. Genevet*, M. A. Kats, Z. Gaburro, and F. Capasso.  
Nano Letters DOI: 10.1021/nl303445u (2012). *Three first authors have equally contributed. We demonstrate optically thin quarter-wave plates built with metasurfaces that generate high-quality circularly polarized light over a broad wavelength range for arbitrary orientation of the incident linear polarization.



[23] Ultra-thin reconfigurable perfect absorber
  M.A. Kats, D. Sharma, J. Lin, P. Genevet, R. Blanchard, Z. Yang,M. M. Qazilbash, D. Basov, S. Ramanathan, F. Capasso.
Applied Physics Letters 101, 221101 (2012). We show that perfect absorption can be achieved in a system comprising a single lossy dielectric layer of thickness much smaller than the incident wavelength on an opaque substrate by utilizing the nontrivial phase shifts at interfaces between lossy media.



[22] Strong optical interference effects in highly-absorptive media: coloring metals with nanometer-thickness optical films
  M.A. Kats, R. Blanchard, P. Genevet, F. Capasso
Nature Materials doi:10.1038/nmat3443 (2012). We show that under appropriate conditions interference can persist in ultrathin, highly absorbing films of a few to tens of nanometres in thickness, and demonstrate a new type of optical coating comprising such a film on a metallic substrate, which selectively absorbs various frequency ranges of the incident light.



[21] Aberration-free ultra-thin flat lenses and axicons at telecom wavelengths based on plasmonic metasurfaces
  F. Aieta, P. Genevet, M. A. Kats, N. Yu, R. Blanchard, Z. Gaburro, and F. Capasso
Nano Letters DOI: 10.1021/nl302516v (2012). The concept of optical phase discontinuities is applied to the design and demonstration of aberration-free planar lenses and axicons, comprising a phased array of ultrathin subwavelength-spaced optical antennas.



[20] Cosine-Gauss plasmon beam: a localized long-range non-diffracting surface wave
  J. Lin, J. Dellinger, P. Genevet, B. Cluzel, F. De Fornel, F. Capasso
Physical Review Letters 109, 093904 (2012). A new surface wave is introduced, the cosine-Gauss beam, which does not diffract while it propagates in a straight line and tightly bound to the metallic surface.



[19] Giant birefringence in plasmonic arrays with widely tailorable optical anisotropy
  M. A. Kats, P. Genevet, G. Aoust, R. Blanchard, Z. Gaburro, F. Capasso
Proceedings of the National Academy of Sciences 10.1073/pnas.1210686109 (2012). We report a theoretical and experimental study of birefringent arrays of two-dimensional (V- and Y-shaped) optical antennas which support two orthogonal charge-oscillation modes and serve as broadband, anisotropic optical elements that can be used to locally tailor the amplitude, phase, and polarization of light. The degree of optical anisotropy can be designed by controlling the interference between the waves scattered by the antenna modes; in particular, we observe a striking effect in which the anisotropy disappears as a result of destructive interference.



[18] Modelling nanoscale V-shaped antennas for the design of optical phased arrays
  R. Blanchard, G. Aoust, P. Genevet, N. Yu, M.A. Kats, Z. Gaburro, F. Capasso,
Physical Review B, 85, 155457 (2012). We present a simplified numerical method to solve for the current distribution in a V-shaped antenna excited by an electric field with arbitrary polarization.



[17] Out-of-plane reflection and refraction of light by anisotropic optical antenna metasurfaces with phase discontinuities
  F. Aieta, P. Genevet, N. Yu, M. A. Kats, Z. Gaburro and F. capasso.
Nano Letters, 12 (3), pp 17021706 (2012). Experiments on ultrathin anisotropic arrays of subwavelength optical antennas display out-of-plane refraction.



[16] Ultra-thin plasmonic optical vortex plate based on phase discontinuities
  P. Genevet, N. Yu, F. Aieta, J. Lin, M. A. Kats, R. Blanchard,M. O. Scully, Z. Gaburro and F. Capasso.
Applied Physics Letters, 100, 13101 (2012). A flat optical device that generates optical vortices with a variety of topological charges is demonstrated. This device spatially modulates light beams over a distance much smaller than the wavelength in the direction of propagation by means of an array of V-shaped plasmonic antennas with sub-wavelength separation.



2011

[15] Multi-wavelength mid-infrared plasmonic antennas with single nanoscale focal point
  R. Blanchard, S. V. Boriskina, P. Genevet, M. A. Kats, J.P. Tetienne, N. Yu, M. O. Scully, L. Dal Negro, F. Capasso.
Optics Express Vol.19, 22113 (2011). We propose and demonstrate a novel photonic-plasmonic antenna capable of confining electromagnetic radiation at several mid-infrared wavelengths to a single sub-wavelength spot.



[14] Effect of radiation damping on the spectral response of plasmonic components
  M. A. Kats, N. Yu, P. Genevet, Z. Gaburro, and F. Capasso,
Optics Express Vol. 19, 21748 (2011). We explore the relationship between the near-field enhancement, absorption, and scattering spectra of localized plasmonic elements. A simple oscillator model including both internal and radiative damping is developed, and is shown to accurately capture the near- and far-field spectral features of linear optical antennas, including their phase response.



[13] Enhancement of optical processes in coupled plasmonic nanocavities
  P. Genevet, J.P. Tetienne, R. Blanchard, M. A. Kats, J.P. B. Muller,M. O. Scully and F. Capasso, Invited paper,
Applied Optics
, 50, G56, (2011). We present detailed experimental and numerical investigations of resonances in deep nanogroove gratings in metallic substrates. These plasmonic nanocavity gratings feature enhanced fields within the grooves that enable a large enhancement of linear and nonlinear optical processes.



[12] Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction
  N. Yu, P. Genevet, M. A. Kats, F. Aieta, J.P. Tetienne, F. Capasso, and Z. Gaburro,
Science 334, 333-337 (2011) New degrees of freedom are attained by introducing abrupt phase changes over the scale of the wavelength. A two-dimensional array of optical resonators with spatially varying phase response and subwavelength separation can imprint such phase discontinuities on propagating light as it traverses the interface between two media. Anomalous reflection and refraction phenomena are observed in this regime in optically thin arrays of metallic antennas on silicon with a linear phase variation along the interface, which are in excellent with generalized laws derived from Fermat’s principle.



[11] Dipolar modeling and experimental demonstration of multi-beam plasmonic collimators
  J-P Tetienne, R. Blanchard, N. Yu, P. Genevet, M. A. Kats, J. A. Fan, T. Edamura, S. Furuta, M. Yamanishi and F. Capasso,
New Journal of Physics 13, 053057 (2011) We designed a new class of plasmonic gratings that generate multiple free-space beams in arbitrary directions from a point source of surface waves, using a phenomenological model that accurately predicts their far-field, in amplitude, phase and polarization.



2010

[10] Large enhancement of nonlinear optical phenomena by plasmonic nanocavity gratings
  P. Genevet, JP Tetienne, E Gatzogiannis, R Blanchard, MA Kats, MO Scully, F. Capasso,
Nano Letters 10 (12), 4880-4883 (2010) We demonstrate a novel plasmonic structure, called plasmonic nanocavity grating, which is shown to dramatically enhance surface nonlinear optical processes. It consists of resonant cavities that are periodically arranged to combine local and grating resonances.



[9] Theoretical description of the transverse localized structures in a face to face VCSEL configuration
  L. Columbo, L. Gil and P. Genevet,
European Physical Journal D 59, 97-107 (2010). A theoretical framework is derived for the description of the localised structures which have recently been observed in a system of two coupled broad-area VCSEL in a long cavity self imaging configuration.



[8] Mutual coherence of laser solitons in coupled semiconductor
  P. Genevet, M. Turconi, S. Barland, M. Giudici and J.R. Tredicce,
European Physical Journal D 59, 109-114 (2010). We analyze experimentally the mutual coherence of single-peak laser solitons and of multi-peaks laser solitons or clusters that coexist in the output beam of a laser system. We show that independent laser solitons are not mutually coherent while the peaks of a cluster have a well established mutual phase relationship.



[7] Bistable and addressable localized vortices in semiconductor lasers
  P. Genevet, S. Barland, M. Giudici and J.R. Tredicce,
Physical Review Letters, 104, 223902 (2010). We demonstrate experimentally that localized emission states in coupled broad-area semiconductor lasers can carry a finite orbital angular momentum.



[6] Multistable monochromatic laser solitons
  P. Genevet, L. Columbo, S. Barland, M. Giudici, L. Gil, and J. R. Tredicce,
Physical Review A 81, 053839 (2010). We study the spectral properties of stationary laser solitons (LSs) generated in two broad-area vertical cavity surface emitting lasers coupled to each other in face-to-face configuration . We demonstrate experimentally that LS emission occurs on a single longitudinal mode frequency of the compound cavity. Multistability is reported among differently “colored” LSs



2009

[5] Stationary Localized Structures and Pulsing Structures in Cavity Soliton Laser
  P. Genevet, S. Barland, M. Giudici and J.R. Tredicce,
Physical Review A 79, 033819 (2009) We realized experimentally a cavity soliton laser by mutually coupling in face to face configuration two broad-area vertical cavity surface emitting lasers, one set to work as amplifier while the second, biased below transparency, plays the role of a saturable absorber. We explore the parameter space, showing the robustness of cavity solitons in this system, and we analyze their switching process. We also report on structures pulsing at the roundtrip time of the compound cavity defined by the two devices.



[4] Microresonator Defects as Sources of Drifting Cavity Solitons
  E. Caboche, F. Pedaci, P. Genevet, S. Barland,M. Giudici, J.R. Tredicce,G. Tissoni and L. A. Lugiato,
Physical Review Letters 102, 163901 (2009). we show that the interplay between these defects and a phase gradient in the driving field induces the spontaneous formation of a regular sequence of CSs moving in the gradient direction. Hence, defects behave as a device built-in CS source, where the CS generation rate can be set by controlling the system parameters.



2008

[3] Cavity Soliton Laser based on mutually coupled semiconductor microresonators
  P. Genevet , S. Barland, M. Giudici, J.R. Tredicce,
Physical Review Letters
101, 123905 (2008). We report on experimental observation of localized structures in two mutually coupled broad-area semiconductor resonators, one of which acts as a saturable absorber. These structures coexist with a dark homogeneous background and they have the same properties as cavity solitons without requiring the presence of a driving beam into the system. They can be switched individually on and off by means of a local addressing beam.



[2] All-optical delay line using semiconductor cavity solitons
  F. Pedaci, S. Barland, E. Caboche, P. Genevet, M. Giudici, and J. R. Tredicce, T. Ackemann, A. J. Scroggie,W. J. Firth, G.-L. Oppo G. Tissoni, R. Jager,
Applied Physics Letters 92, 011101 (2008). An all-optical delay line based on the lateral drift of cavity solitons in semiconductor microresonators is proposed and experimentally demonstrated. The functionalities of the device proposed as well as its performance is analyzed and compared with recent alternative methods based on the decrease of group velocity in the vicinity of resonances.



2006

[1] Positionning cavity solitons with a phase mask
F. Pedaci, P. Genevet, S. Barland, M. Giudici, J.R. Tredicce, 
​
Applied Physics Letters 89 221111 (2006).

Using a liquid crystal light valve to spatially modulate the phase of a coherent beam injected into a broad area vertical cavity semiconductor laser, the authors create reconfigurable arrays of cavity solitons. Fast time scales associated with semiconductor lasers and plasticity of localized structures suggest their potential for optical data.

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