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Enhancement of Optical Third Order Nonlinearity in Main-Chain Oriented Polythiophenes

Published online by Cambridge University Press:  15 February 2011

Haruki Okawa ,
Tatsuo Wada  and
Hiroyuki Sasabe
Haruki Okawa
Affiliation:
The Institute of Physical & Chemical Research (RIKEN), FRONTIER RESEARCH PROGRAM, Hirosawa 2–1, Wako, Saitama 351–01, JAPAN.
Tatsuo Wada
Affiliation:
The Institute of Physical & Chemical Research (RIKEN), FRONTIER RESEARCH PROGRAM, Hirosawa 2–1, Wako, Saitama 351–01, JAPAN.
Hiroyuki Sasabe
Affiliation:
The Institute of Physical & Chemical Research (RIKEN), FRONTIER RESEARCH PROGRAM, Hirosawa 2–1, Wako, Saitama 351–01, JAPAN.
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Abstract

The third order nonlinear responses for soluble one-dimensional ϕ-conjugated polymers, poly(3-alkylthiophene)s were investigated. Uniaxial stretching of the polymer film was carried out to align the polymer backbone. The stretched film showed large dichroism and crystallinity. Third order nonlinear susceptibility, χ(3) 1111 of the stretched film was determined by optical third harmonic generation. A large enhancement of χ(3) due to the main chain alignment was observed.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 244: Symposium J – Optical Waveguide Materials , 1991 , 263
Copyright
Copyright © Materials Research Society 1992

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References

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