Exceptionally Efficient Second-Harmonic Generation in a Double-Layer Thin-Film Lithium Niobate Waveguide

Yuan Li,Lutong Cai,Lin Zhang

2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings (ACP/POEM)（2023）

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摘要

We demonstrate highly efficient second-harmonic generation in thin-film lithium niobate waveguides. Due to the significantly enhanced modal overlap integral in polarization-reversed double layers, an unprecedentedly high conversion efficiency of up to 9700% W- ¹ cm- ² is achieved.

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关键词

integrated optics,second harmonic generation,lithium niobate

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