Spatial self-phase modulation in Langmuir-Blodgett films

Weichong Du; Kangsheng Chen; Yanbin Zhu; Songhao Liu

doi:10.1117/12.144078

11 May 1993 Spatial self-phase modulation in Langmuir-Blodgett films

Weichong Du, Kangsheng Chen, Yanbin Zhu, Songhao Liu

Proceedings Volume 1979, 1992 International Conference on Lasers and Optoelectronics; (1993) https://doi.org/10.1117/12.144078
Event: 1992 International Conference on Lasers and Optoelectronics, 1992, Bejing, China

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.

Citation Download Citation

Weichong Du, Kangsheng Chen, Yanbin Zhu, and Songhao Liu "Spatial self-phase modulation in Langmuir-Blodgett films", Proc. SPIE 1979, 1992 International Conference on Lasers and Optoelectronics, (11 May 1993); https://doi.org/10.1117/12.144078

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