Chaos-assisted broadband momentum transformation in optical microresonators
Chaos-assisted broadband momentum transformation in optical microresonators
复制标题
光学微谐振器中的混沌辅助宽带动量变换
DOI：
10.1126/science.aao0763
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发表时间：
2017-10-20
期刊：
影响因子：
56.9
通讯作者：
Xiao, Yun-Feng
中科院分区：
文献类型：
--
作者：
Jiang, Xuefeng;Shao, Linbo;Xiao, Yun-Feng
动量守恒定律排除了光学微谐振器中许多所需的过程。我们报告了非对称回音壁微谐振器中光的宽带动量变换。在混沌运动的辅助下，宽带光可以在几皮秒内在具有不同角动量的光学模式之间传播。从可见光到近红外波段的有效耦合被证明是一个aveguide和回音壁模式之间的质量因子超过1000万。宽带动量变换使三次谐波产生的器件转换效率比传统的倏逝波耦合提高了三个数量级以上。所观察到的宽带和快速动量转换可以促进诸如半导体激光器、宽带存储器和多波长光网络等应用。
The law of momentum conservation rules out many desired processes in optical microresonators. We report broadband momentum transformations of light in asymmetric whispering gallery microresonators. Assisted by chaotic motions, broadband light can travel between optical modes with different angular momenta within a few picoseconds. Efficient coupling from visible to near-infrared bands is demonstrated between a nanowaveguide and whispering gallery modes with quality factors exceeding 10 million. The broadband momentum transformation enhances the device conversion efficiency of the third-harmonic generation by greater than three orders of magnitude over the conventional evanescent-wave coupling. The observed broadband and fast momentum transformation could promote applications such as multicolor lasers, broadband memories, and multiwavelength optical networks.