Investigation of optical nonlinearities in an ultra-high-Q Si nanocavity in a two-dimensional photonic crystal slab

被引：125

作者：

Uesugi, T ^{[1
]}

Song, BS ^{[1
]}

Asano, T ^{[1
]}

Noda, S ^{[1
]}

机构：

[1] Kyoto Univ, Dept Elect Sci & Engn, Nishikyo Ku, Kyoto 6158510, Japan

来源：

OPTICS EXPRESS | 2006年 / 14卷 / 01期

关键词：

D O I：

10.1364/OPEX.14.000377

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页码：377 / 386

页数：10

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