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Proceedings Paper

Nonlinear optical activities of organic and inorganic semiconductors
Author(s): Takayoshi Kobayashi
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Paper Abstract

The nonlinear optical properties of organics with unsaturated bonds are compared with those of inorganics including semiconductors and dielectrics. Experimental results of ultrafast nonlinear response of conjugated polymers, especially polydiacetylenes, are described and a model is proposed to explain the relaxation processes of photoexcitations in the conjugated polymers. Applying the model constructed on the basis of the extensive experimental study, we propose polymers to obtain ultrafast resonant optical nonlinearity. This paper also reports the first observation of the excitonic superradiance from CdS micro crystallites. We developed a new method to prepare CdS microcrystallites embedded in polymer films, which shows enhanced band-edge emission due to the direct recombination of an exciton in the microcrystallite.

Paper Details

Date Published: 23 July 1993
PDF: 35 pages
Proc. SPIE 1852, Nonlinear Optical Properties of Advanced Materials, (23 July 1993); doi: 10.1117/12.148440
Show Author Affiliations
Takayoshi Kobayashi, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 1852:
Nonlinear Optical Properties of Advanced Materials
Shahab Etemad, Editor(s)

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