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Proceedings Paper

Optical bistability of terthiophene/polymethylmethacrylate composite film
Author(s): Suguru Mototani; Shizuyasu Ochiai; Kenzo Kojima; Teruyoshi Mizutani
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Paper Abstract

In our previous data, following organic gas treatment in 1,2-Dichloroethane vapor, the third order nonlinear susceptibility of a tertiary-butyl vanadylphthalocyanine ((t-Bu)1.45VOPc)/polymethylmethacrylate (PMMA) composite film was observed to increase markedly, because the phase morphology of the composite film changed from Phase I to II. Therefore, the third order nonlinear optical property of the quasi-waveguide, comprised of composite film, was stronger than that before organic gas treatment. When irradiating the quasi-waveguide treated organic gas for 25 hrs with input laser power intensity, the output power had optical bistability. The optical bistability also displayed excellent stability and effective reproducibility. However, in terms of the input laser power intensity dependences of optical bistability, the switching on-off position shifted with the increase in input laser power intensity. In this study, we adopted a terthiophene(3T)/PMMA and poly(3-hexylthiophene)[P3HT]/PMMA composite films, possessing strong third-order optical nonlinearity, to decrease the change in the on-off position depending on the input laser power intensity. The optical bistability of the optical devices, fabricated using a prism, 3T/PMMA or P3HT/PMMA composite films were investigated. The shift in the on-off position in optical bistability characteristics caused by the refractive index change in the thermal effect was improved by the use of the terthiophene (3T)/PMMA or P3HT/PMMA composite films.

Paper Details

Date Published: 13 September 2007
PDF: 10 pages
Proc. SPIE 6653, Linear and Nonlinear Optics of Organic Materials VII, 66530P (13 September 2007); doi: 10.1117/12.732268
Show Author Affiliations
Suguru Mototani, Aichi Institute of Technology (Japan)
Shizuyasu Ochiai, Aichi Institute of Technology (Japan)
Kenzo Kojima, Aichi Institute of Technology (Japan)
Teruyoshi Mizutani, Aichi Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 6653:
Linear and Nonlinear Optics of Organic Materials VII
Jean-Michel Nunzi, Editor(s)

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