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Proceedings Paper

Molecular orientation by two-photon absorption
Author(s): H. Ishitobi; M. Maeda; Z. Sekkat; S. Kawata
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Paper Abstract

We demonstrate that two-photon induced molecular orientation of diarylethene (DE) in thin films of poly-methyl-methacrylate (PMMA) and multi-photon induced anisotropic bleaching of disperse red one (DR1). We confirmed that two-photon absorption was induced in DE by measuring the quadratic dependence of isomerization rate on excitation light power, and we observed two-photon photo-orientation of DE in dichroic absorbance. Disperse red one (DR1) was orientationally bleached in PMMA by polarized multi-photon excitation. Anisotropic refractive index changes result from the nonlinear photobleaching of DR1 was detected by a polarization confocal microscope, and bit-oriented data storage was demonstrated.

Paper Details

Date Published: 18 August 2005
PDF: 8 pages
Proc. SPIE 5935, Linear and Nonlinear Optics of Organic Materials V, 59350F (18 August 2005); doi: 10.1117/12.611185
Show Author Affiliations
H. Ishitobi, Osaka Univ. (Japan)
M. Maeda, Osaka Univ. (Japan)
Z. Sekkat, Osaka Univ. (Japan)
Al Akhawayn Univ. (Morocco)
S. Kawata, Osaka Univ. (Japan)
RIKEN (Japan)


Published in SPIE Proceedings Vol. 5935:
Linear and Nonlinear Optics of Organic Materials V
Manfred Eich, Editor(s)

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