Control of the nonlinear carrier response time of AlGaAs photonic crystal waveguides by sample design
Control of the nonlinear carrier response time of AlGaAs photonic crystal waveguides by sample design
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通过样品设计控制 AlGaAs 光子晶体波导的非线性载流子响应时间
DOI：
10.1063/1.2191955
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发表时间：
2006
影响因子：
4
通讯作者：
J. Roberts
中科院分区：
文献类型：
--
作者：
P. Murzyn;A. Z. Garcia;D. Kundys;A. M. Fox;J. Wells;D. Whittaker;M. S. Skolnick;T. Krauss;J. Roberts
利用反射几何泵浦探测光谱研究了AlGaAs高折射率反差型一维光子晶体波导的自由载流子响应时间。我们在近红外光谱区观察到泵浦引起的光子共振位移，并研究了衰减时间与样品参数的关系。我们发现，通过改变结构周期和蚀刻深度，响应时间可以在8ps到33ps之间变化。这与反射率的巨大变化相结合，证明了作为具有可控恢复时间的超快光子开关的极好应用潜力。
We have used reflection geometry pump-probe spectroscopy to investigate the free carrier response time of AlGaAs high refractive index contrast one-dimensional photonic crystal waveguides. We have observed pump-induced shifts of photonic resonances in the near infrared spectral region, and have studied the dependence of the decay time on the sample parameters. We find that the response time can be varied from 8to33ps by changing the structure period and etch depth. This, combined with the large changes observed in the reflectivity, demonstrates excellent potential for application as ultrafast photonic switches with a controllable recovery time.
影响因子：
4
作者：
Shimizu, M;Ishihara, T
通讯作者：
Ishihara, T