Journal ArticleDOI
Quasi-BIC Resonant Enhancement of Second-Harmonic Generation in WS2 Monolayers.
Nils Bernhardt,Nils Bernhardt,Kirill Koshelev,Kirill Koshelev,Simon J. U. White,Kelvin Wong Choon Meng,Kelvin Wong Choon Meng,Johannes E. Fröch,Sejeong Kim,Toan Trong Tran,Duk-Yong Choi,Yuri S. Kivshar,Yuri S. Kivshar,Alexander S. Solntsev +13 more
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TLDR
This work boosts the effective nonlinear susceptibility of a TMD monolayer by integrating it with a resonant dielectric metasurface, which supports pronounced optical resonances with high quality factors: bound states in the continuum (BICs).Abstract:
Atomically thin monolayers of transition metal dichalcogenides (TMDs) have emerged as a promising class of novel materials for optoelectronics and nonlinear optics. However, the intrinsic nonlinearity of TMD monolayers is weak, limiting their functionalities for nonlinear optical processes such as frequency conversion. Here we boost the effective nonlinear susceptibility of a TMD monolayer by integrating it with a resonant dielectric metasurface that supports pronounced optical resonances with high quality factors: bound states in the continuum (BICs). We demonstrate that a WS2 monolayer combined with a silicon metasurface hosting BICs exhibits enhanced second-harmonic intensity by more than 3 orders of magnitude relative to a WS2 monolayer on top of a flat silicon film of the same thickness. Our work suggests a pathway to employ high-index dielectric metasurfaces as hybrid structures for enhancement of TMD nonlinearities with applications in nonlinear microscopy, optoelectronics, and signal processing.read more
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Journal ArticleDOI
Photonic Bound States in the Continuum: From Basics to Applications
Journal ArticleDOI
Metasurfaces for quantum photonics
TL;DR: In this paper, the authors review recent progress in the emerging field of quantum-photonics applications of metasurfaces, focusing on innovative and promising approaches to create, manipulate and detect non-classical light.
Journal ArticleDOI
Continuous Wave Second Harmonic Generation Enabled by Quasi-Bound-States in the Continuum on Gallium Phosphide Metasurfaces
Aravind P. Anthur,Haizhong Zhang,Ramón Paniagua-Domínguez,Dmitry A. Kalashnikov,Son Tung Ha,Tobias W. W. Maß,Arseniy I. Kuznetsov,Leonid A. Krivitsky +7 more
TL;DR: In this article, the authors demonstrate visible range, continuous wave (CW) SHG by combining the attractive material properties of gallium phosphide with high quality-factor photonic modes enabled by bound states in the continuum.
Proceedings ArticleDOI
Dielectric Resonant Metaphotonics
TL;DR: In this article, the physics of Mie resonances excited in nanoparticles with a high refractive index and dielectric structures is underpinned by subwavelength optics and nanophotonics.
Journal ArticleDOI
Metasurfaces for Quantum Photonics
TL;DR: In this paper, the authors review recent progress in the field of quantum-photonics applications of metasurfaces, focusing on innovative and promising approaches to create, manipulate, and detect nonclassical light.
References
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