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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 15, Iss. 12 — Dec. 1, 1998
  • pp: 2937–2945

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

R. Rangel-Rojo, S. Yamada, H. Matsuda, H. Kasai, H. Nakanishi, A. K. Kar, and B. S. Wherrett  »View Author Affiliations


JOSA B, Vol. 15, Issue 12, pp. 2937-2945 (1998)
http://dx.doi.org/10.1364/JOSAB.15.002937


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Abstract

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.

© 1998 Optical Society of America

OCIS Codes
(160.4890) Materials : Organic materials
(190.4400) Nonlinear optics : Nonlinear optics, materials
(300.6400) Spectroscopy : Spectroscopy, molecular beam

Citation
R. Rangel-Rojo, S. Yamada, H. Matsuda, H. Kasai, H. Nakanishi, A. K. Kar, and B. S. Wherrett, "Spectrally resolved third-order nonlinearities in polydiacetylene microcrystals: influence of particle size," J. Opt. Soc. Am. B 15, 2937-2945 (1998)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-15-12-2937


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References

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