Light localization induced enhancement of third order nonlinearities in a GaAs photonic crystal waveguide
Light localization induced enhancement of third order nonlinearities in a GaAs photonic crystal waveguide
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DOI：
10.1364/oe.17.000552
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发表时间：
2009-01-19
期刊：
影响因子：
3.8
通讯作者：
Roosen, Gerald
中科院分区：
文献类型：
--
作者：
Baron, Alexandre;Ryasnyanskiy, Aleksandr;Roosen, Gerald
在GaAs光子晶体波导（PCW）中进行了非线性传输实验，结果表明，由于光在慢模区的传输，如双光子吸收（TPA）、光学克尔效应和自由载流子引起的折射率变化，三阶非线性会大大增强。已经建立了一个理论模型，显示了一个很好的定量协议与实验数据，并证明了群速度起着重要的作用。这些观察给一个强有力的洞察使用PCW的光开关器件。(C)2008年美国光学学会
Nonlinear propagation experiments in GaAs photonic crystal waveguides (PCW) were performed, which exhibit a large enhancement of third order nonlinearities, due to light propagation in a slow mode regime, such as two-photon absorption (TPA), optical Kerr effect and refractive index changes due to free-carriers generated by TPA. A theoretical model has been established that shows a very good quantitative agreement with experimental data and demonstrates the important role that the group velocity plays. These observations give a strong insight into the use of PCWs for optical switching devices. (C) 2008 Optical Society of America