论文标题

介电光栅中连续体中有绑定状态的光学双重性

Optical bistability with bound states in the continuum in dielectric gratings

论文作者

Maksimov, Dmitrii N., Bogdanov, Andrey A., Bulgakov, Evgeny N.

论文摘要

我们认为通过介电光栅散射光,以支持连续体中的光学结合状态。由于存在瞬时KERR非线性,因此结合态光谱附近的临界场增强触发了光学双重性的效果。理论上在时间耦合模式理论的框架中解释了双重性的发作。作为中心结果,我们将问题置于单场驱动的非线性振荡器的形式。与全波数值模拟相比,验证了理论结果。

We consider light scattering by dielectric gratings supporting optical bound states in the continuum. Due to the presence of instantaneous Kerr nonlinearity the critical field enhancement in the spectral vicinity of the bound state triggers the effect of optical bistability. The onset of bistability is explained theoretically in the framework of the temporal coupled mode theory. As the central result we cast the problem into the form of a singly field-driven nonlinear oscillator. The theoretical results are verified in comparison against full-wave numerical simulations.

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