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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 22, Iss. 11 — Nov. 1, 2005
  • pp: 2468–2471

Application of continuous-wave laser Z-scan technique to photoisomerization

J. C. Liang and X. Q. Zhou  »View Author Affiliations


JOSA B, Vol. 22, Issue 11, pp. 2468-2471 (2005)
http://dx.doi.org/10.1364/JOSAB.22.002468


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Abstract

We extend the application of the Z-scan technique to the investigation of refractive index change associated with the photoisomerization of azobenzene polymers. The performing of a Z scan is simplified, because only a cw laser is needed in the experiments. On the basis of an angular hole-burning model, a formula on the refractive index change is deduced. Measurements are also carried out on a poly(methyl methacrylate) film doped with disperse red 13 by the use of a Z-scan, and polarization effects in the refractive index change are revealed by employing a single beam. Both theoretical and experimental results show that the refractive index change effect associated with linearly polarized light is stronger than that associated with unpolarized light.

© 2005 Optical Society of America

OCIS Codes
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(190.5940) Nonlinear optics : Self-action effects
(260.5130) Physical optics : Photochemistry

ToC Category:
Nonlinear Optics

Citation
J. C. Liang and X. Q. Zhou, "Application of continuous-wave laser Z-scan technique to photoisomerization," J. Opt. Soc. Am. B 22, 2468-2471 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-11-2468

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