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Proceedings Paper

All-optical switching effect with low background and high stability
Author(s): Yangcheng Luo; Weilong She; Shuizhu Wu; Fang Zeng; Shenlan Yao
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Paper Abstract

Two control beams (a linearly and a circularly polarized) are used to pump poly(methyl methacrylate) (PMMA) films doped with azobenzene chromophore Disperse Red 1 (DR1), and the all-optical switching effects with low background and high stability are reported. The switching effects are experimentally investigated by changing the pump conditions of two control beams. Experiments show that the circularly polarized pump beam can disorder the oriented chromophores and speed up the relaxation of photo-induced birefringence, consequently decrease the background and increase the stability and the extinction ratio of the switching signals.

Paper Details

Date Published: 11 January 2005
PDF: 8 pages
Proc. SPIE 5642, Information Optics and Photonics Technology, (11 January 2005); doi: 10.1117/12.578759
Show Author Affiliations
Yangcheng Luo, Zhongshan Univ. (China)
Shaoguan Univ. (China)
Weilong She, Zhongshan Univ. (China)
Shuizhu Wu, South China Univ. of Technology (China)
Fang Zeng, South China Univ. of Technology (China)
Shenlan Yao, South China Univ. of Technology (China)


Published in SPIE Proceedings Vol. 5642:
Information Optics and Photonics Technology
Guoguang Mu; Francis T. S. Yu; Suganda Jutamulia, Editor(s)

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