Hu Xiaoyong, Jiang Ping, Yang Hong, Gong Qihuang
State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing, China.
Opt Lett. 2006 Sep 15;31(18):2777-9. doi: 10.1364/ol.31.002777.
An all-optical tunable photonic bandgap microcavity made from a two-dimensional polystyrene photonic crystal is fabricated by focused ion beam etching. The pump and probe scheme is adopted to measure tunability based on the femtosecond optical Kerr effect. An ultrafast response time of less than 120 fs is achieved for the tunable photonic bandgap microcavity. The microcavity resonant wavelength shifts 3.1 nm under excitation of 9.4 GW/cm2 pump intensity, which is in agreement with the theoretical prediction.
一种由二维聚苯乙烯光子晶体制成的全光可调谐光子带隙微腔通过聚焦离子束蚀刻制备而成。采用泵浦-探测方案基于飞秒光学克尔效应测量可调谐性。该可调谐光子带隙微腔实现了小于120飞秒的超快响应时间。在9.4吉瓦/平方厘米的泵浦强度激发下，微腔共振波长偏移3.1纳米，这与理论预测相符。
