All-Dielectric Intersubband Polaritonic Metasurface with Giant Second-Order Nonlinear Response

Raktim Sarma,Jiaming Xu,Domenico de Ceglia,Nishant Nookala,Luca Carletti,Salvatore Campione,John Klem,Sylvain D. Gennaro,Michael B. Sinclair,Mikhail A. Belkin,Igal Brener

2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)（2020）

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摘要

We demonstrate an extremely nonlinear all-dielectric metasurface that employs intersubband polaritons to achieve a second-harmonic conversion coefficient of 3 mW/W ² , and second-harmonic power conversion efficiency of 0.045% at a modest pump intensity of 6.7 kW/cm ² .

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关键词

giant second-order nonlinear response,intersubband polaritons,second-harmonic conversion coefficient,second-harmonic power conversion efficiency,all-dielectric intersubband polaritonic metasurface,nonlinear all-dielectric metasurface,pump intensity

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