NONLINEAR MATERIAL DEVICES

Nonlinear optical limiting of the azo dye methyl-red doped nematic liquid crystalline films

[+] Author Affiliations
Luogen Deng

Beijing Institute of Technology, The Faculty of Science, Department of Applied Physics, Beijing, China E-mail: luogen@bit.edu.cn

Hua-Kuang Liu

National Taiwan University, The Graduate Institute of Electro-Optical Engineering, Department of Electrical Engineering, Taipei, Taiwan, China

and The Center of Engineering Advanced Research, Oak Ridge National Laboratory, Oak Ridge, Tennessee?37831-6355

Opt. Eng. 42(10), 2936-2941 (Oct 01, 2003). doi:10.1117/1.1607332
History: Received Dec. 5, 2002; Revised Apr. 14, 2003; Accepted Apr. 15, 2003; Online September 24, 2003
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We describe the nonlinear optical limiting behaviors of the azo dye methyl-red-doped nematic liquid crystalline (NLC) films and report the phenomena of the formation of an interesting dark spot and a dynamic self-action diffraction ring pattern in the far field beyond the sample cell. We present the method of measuring the optical limiting characteristics of the methyl-red-dye-doped NLC films with typical test results obtained in the experiments. We theoretically analyze the optical limiting mechanisms of the methyl-red-dye-doped NLC films and discuss the advantages and restrictions of the methyl-red dye doped liquid crystal limiters, and propose several possible solutions to overcome these restrictions. © 2003 Society of Photo-Optical Instrumentation Engineers.

© 2003 Society of Photo-Optical Instrumentation Engineers

Citation

Luogen Deng and Hua-Kuang Liu
"Nonlinear optical limiting of the azo dye methyl-red doped nematic liquid crystalline films", Opt. Eng. 42(10), 2936-2941 (Oct 01, 2003). ; http://dx.doi.org/10.1117/1.1607332


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