Investigation of optical nonlinearities in an ultra-high-Q Si nanocavity in a two-dimensional photonic crystal slab
Investigation of optical nonlinearities in an ultra-high-Q Si nanocavity in a two-dimensional photonic crystal slab
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DOI：
10.1364/opex.14.000377
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发表时间：
2006-01-09
期刊：
影响因子：
3.8
通讯作者：
Noda, S
中科院分区：
文献类型：
--
作者：
Uesugi, T;Song, BS;Noda, S
我们研究了不同输入光功率下超高 Q 值光子纳米腔的特性（Q = 类似于 230,000，模态体积 = 类似于 1.2 立方波长）。随着输入功率的增加，腔体特性发生红移。这种非线性可以通过耦合模式理论来解释，同时考虑到双光子吸收、相关的自由载流子吸收、等离子体效应、热光效应和克尔效应。在 10 W 的极低输入光功率下观察到非线性腔特性。我们证实这些低功率非线性光学效应可归因于纳米腔的超高 Q 因子。 (c) 2006 年美国光学学会。
We investigated the characteristics of an ultra-high-Q photonic nanocavity (Q = similar to 230,000 and modal volume = similar to 1.2 cubic wavelengths) at various input light powers. The cavity characteristics were red-shifted as the input power increased. This nonlinearity could be explained by coupled-mode theory, taking into account two-photon absorption, the associated free-carrier absorption, plasma effect, thermo-optic effect, and a Kerr effect. Nonlinear cavity characteristics were observed at an extremely low input light power of 10 W. We confirmed that these low-power nonlinear optical effects could be attributed to the ultra-high Q factor of the nanocavity. (c) 2006 Optical Society of America.