Nonlinear optical activities of organic and inorganic semiconductors

Takayoshi Kobayashi

doi:10.1117/12.148440

23 July 1993 Nonlinear optical activities of organic and inorganic semiconductors

Takayoshi Kobayashi

Proceedings Volume 1852, Nonlinear Optical Properties of Advanced Materials; (1993) https://doi.org/10.1117/12.148440
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

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.

Citation Download Citation

Takayoshi Kobayashi "Nonlinear optical activities of organic and inorganic semiconductors", Proc. SPIE 1852, Nonlinear Optical Properties of Advanced Materials, (23 July 1993); https://doi.org/10.1117/12.148440

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