超短脉冲
光电子学
材料科学
调制(音乐)
光子晶体
光子学
吸收(声学)
光学
光开关
光抽运
激光器
物理
声学
作者
Chad Husko,Alfredo De Rossi,Sylvain Combrié,Quynh Vy Tran,Fabrice Raineri,Chee Wei Wong
摘要
We demonstrate all-optical modulation based on ultrafast optical carrier injection in a GaAs photonic crystal cavity using a degenerate pump-probe technique. The observations agree well with a coupled-mode model incorporating all relevant nonlinearities. The low switching energy (∼120 fJ), small energy absorption (∼10 fJ), fast on-off response (∼15 ps), limited only by carrier lifetime, and a minimum 10 dB modulation depth suggest practical all-optical switching applications at high repetition rates.
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