A simple all-optical switch based on photoinduced birefringence effect is demonstrated in azo dye (DR1) doped polymer (PMMA) thin films. The all-optical switching effect has been studied at different control beam power and different temperatures of the sample. With a control power of 30.7 mW and at 56 ?, the response time of the switching is less than 5 ms, and the depth of the modulation reaches 80%.
© 2005 Chinese Optics Letters
(190.0190) Nonlinear optics : Nonlinear optics
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(310.0310) Thin films : Thin films
(310.6860) Thin films : Thin films, optical properties
Duanbin Luo, Weilong She, Shuizhu Wu, Fang Zeng, Tian Tang, and Shenglan Yao, "All-optical switching effect based on azodye-doped polymer thin films," Chin. Opt. Lett. 1, 243-245 (2003)