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Proceedings Paper

Spatial self-phase modulation in Langmuir-Blodgett films
Author(s): Weichong Du; Kangsheng Chen; Yanbin Zhu; Songhao Liu
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Paper Abstract

Multiple diffraction rings are observed after a pulse laser beam passes through an absorbing dye LB film. The theoretical analysis, based on the model of transverse self-phase modulation, is also given. The saturated nonlinear refractive index n2 is estimated to be 2.0 X 10-8 cm2/W from the number of rings induced in the LB films. The main contribution to this larger nonlinearity is believed to be from laser-induced transformation between H-aggregates and monomers of molecules in the LB films.

Paper Details

Date Published: 11 May 1993
PDF: 6 pages
Proc. SPIE 1979, 1992 International Conference on Lasers and Optoelectronics, (11 May 1993); doi: 10.1117/12.144078
Show Author Affiliations
Weichong Du, South China Normal Univ. (China)
Kangsheng Chen, Zhejiang Univ. (China)
Yanbin Zhu, South China Normal Univ. (China)
Songhao Liu, South China Normal Univ. (China)

Published in SPIE Proceedings Vol. 1979:
1992 International Conference on Lasers and Optoelectronics
Sui-Sheng Mei; Bingkun Zhou, Editor(s)

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