论文标题
在连续体中由多个绑定状态启用的全dielectric跨表面中的高效率光频率混合
High-efficiency optical frequency mixing in an all-dielectric metasurface enabled by multiple bound states in the continuum
论文作者
论文摘要
我们在硅纳米型二聚体跨表面中呈现非线性光学四波混合。在倾斜的入射平面波下，设计的元表面表现出多回旋特征，并具有连续体（BIC）中三个准结合状态的同时激发。通过在输入凸起波长下采用这些准BIC，以最大化电场能量的最大化，可以证明三阶非线性过程的显着增强，包括第三次荷尔马式生成，退化和非脱位四波混合，从而在可见波长中产生了十个新频率。这项工作可能会导致新的超跨光学混合器的新边界，用于在光学电路，超敏感性和量子纳米光子方面的应用。
We present nonlinear optical four-wave mixing in a silicon nanodisk dimer metasurface. Under the oblique incident plane waves, the designed metasurface exhibits a multi-resonant feature with simultaneous excitations of three quasi-bound states in the continuum (BIC). Through employing these quasi-BICs with maximizing electric field energy at the input bump wavelengths, significant enhancement of third-order nonlinear processes including third-harmonic generation, degenerate and non-degenerate four-wave mixing are demonstrated, giving rise to ten new frequencies in the visible wavelengths. This work may lead to a new frontier of ultracompact optical mixer for applications in optical circuitry, ultrasensitive sensing, and quantum nanophotonics.
