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Third Order Optical Nonlinearity of Soluble Polythiophenes

Published online by Cambridge University Press:  21 February 2011

Haruki Okawa ,
Tatsuo Wada ,
Akira Yamada  and
Hiroyuki Sasabe
Haruki Okawa
Affiliation:
Frontier Research Program, RIKEN (the Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-01, JAPAN
Tatsuo Wada
Affiliation:
Frontier Research Program, RIKEN (the Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-01, JAPAN
Akira Yamada
Affiliation:
Frontier Research Program, RIKEN (the Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-01, JAPAN
Hiroyuki Sasabe
Affiliation:
Frontier Research Program, RIKEN (the Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-01, JAPAN
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Abstract

Soluble conjugated polymers, poly (3-alkylthiophene)s were prepared by chemically oxidative polymerization. The polymers had no absorption at wavelengths longer than 600 nm, indicating that the polymers were suitable for waveguide structures. Dispersion of refractive index (real and imaginary parts) was calculated from the reflectance data using the Kramers-Kronig relation. The dispersion agreed with the result obtained by ellipsometry. Third order optical nonlinearity, χ(3)(−3ω; ω, ω, ω), of the polymers was determined by optical third harmonic generation (THG). Enhancement of the χ(3) by three photon absorption was observed when a beam of 1.54 μm was used as a fundamental. Also, light propagation properties were investigated by using slab waveguides of the polymers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 214: Symposium R1 – Optical and Electrical Properties of Polymers , 1990 , 23
Copyright
Copyright © Materials Research Society 1991

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References

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