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

Journal Article · Tue Nov 01 04:00:00 EST 2005 · Journal of the Optical Society of America. Part B, Optical Physics

DOI:https://doi.org/10.1364/JOSAB.22.002468· OSTI ID:20696582

Liang, J C; Zhou, X Q ^[1]

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1. College of Physics Science and Information Engineering, University of Jishou, Hunan, 416000 (China)

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.

• OSTI ID: 20696582
• Journal Information: Journal of the Optical Society of America. Part B, Optical Physics, Journal Name: Journal of the Optical Society of America. Part B, Optical Physics Journal Issue: 11 Vol. 22; ISSN JOBPDE; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DOPED MATERIALS
FILMS
KERR EFFECT
LASERS
METHACRYLIC ACID ESTERS
PHOTOCHEMISTRY
POLARIZATION
POLYMERS
REFRACTIVE INDEX
VISIBLE RADIATION