Spectrally resolved third-order nonlinearities in polydiacetylene microcrystals: influence of particle size

被引：32

作者：

Rangel-Rojo, R

Yamada, S

Matsuda, H

Kasai, H

Nakanishi, H

Kar, AK

Wherrett, BS

机构：

[1] Natl Inst Mat & Chem Res, Dept Polymer Chem, Mol Photon Grp, Tsukuba, Ibaraki 3058565, Japan

[2] Tohoku Univ, Inst Chem React Sci, Sendai 98077, Japan

[3] Heriot Watt Univ, Dept Phys, Edinburgh EH14 4AS, Midlothian, Scotland

[4] Ctr Invest Cient & Educ Super Ensenada, Dept Opt, Ensenada 22860, Baja California, Mexico

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1998年 / 15卷 / 12期

关键词：

D O I：

10.1364/JOSAB.15.002937

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The on- and near-resonant third-order nonlinear optical response of polydiacetylene microcrystals in suspension was studied by the Z-scan technique with tunable picosecond pulses. The absorptive and refractive contributions to the excitonic-dominated nonlinearity were fully resolved at several wavelengths. Microcrystals of two different average sizes were studied, and a comparison of their nonlinear coefficients; was made. A three-level model for the nonlinear response is presented that shows good agreement with the experimental data. (C) 1998 Optical Society of America [50740-3224(98)00812-1] OCIS codes: 190.4400, 160.4890, 300.6400.

引用

页码：2937 / 2945

页数：9

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