All-optical switching and nonlinear optical properties of HBT in ethanol solution
Zheng Jia-Jin(郑加金), Zhang Gui-Lan(张桂兰)† , Guo Yang-Xue(郭阳雪), Li Xiang-Ping (李向平), and Chen Wen-Ju(陈文驹)
Institute of Modern Optics, Nankai University, Optoelectronics Information Science and Technology Laboratory, Ministry of Education, Tianjin 300071, China
Abstract This paper demonstrates an all-optical switching model system comprising a single pulsed pump beam at 355 nm and a CW He--Ne signal beam at 632.8 nm with 2-(2$^\prime$ -hydroxyphenyl)benzothiazole (HBT) in ethanol solution. The origins of the optical switching effect were discussed. By the study of nonlinear optical properties for HBT in ethanol solvent, this paper verified that the excited-state intramolecular proton transfer (ESIPT) effect of HBT and the thermal effect of solvent worked on quite different time scales and together induced the change of the refractive index of HBT solution, leading to the signal beam deflection. The results indicated that the HBT molecule could be an excellent candidate for high-speed and high-sensitive optical switching devices.
Received: 09 May 2006
Revised: 20 July 2006
Accepted manuscript online:
PACS:
42.65.Pc
(Optical bistability, multistability, and switching, including local field effects)
Fund: Project supported by the
National Natural Science Foundation of
China (Grant No~60178025) and the Key Laboratory of Opto-electronics Information
Technical Science of Ministry of Education, Institute of Modern Optics,
Nankai University, China.
Cite this article:
Zheng Jia-Jin(郑加金), Zhang Gui-Lan(张桂兰), Guo Yang-Xue(郭阳雪), Li Xiang-Ping (李向平), and Chen Wen-Ju(陈文驹) All-optical switching and nonlinear optical properties of HBT in ethanol solution 2007 Chinese Physics 16 1047
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