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Toward Highly Oriented Conjugated Polymers for Non-Linear Optics

Published online by Cambridge University Press:  25 February 2011

P. Smith ,
A. J. Heeger ,
F. Wudl  and
J. Chiang
P. Smith
Affiliation:
Institute for Polymers and Organic Solids and Department of Physics, University of California, Santa Barbara, CA 91036 and Department of Materials Science, School of Engineering, University of California, Santa Barbara, CA 91036
A. J. Heeger
Affiliation:
Institute for Polymers and Organic Solids and Department of Physics, University of California, Santa Barbara, CA 91036 and Department of Materials Science, School of Engineering, University of California, Santa Barbara, CA 91036
F. Wudl
Affiliation:
Institute for Polymers and Organic Solids and Department of Physics, University of California, Santa Barbara, CA 91036 and Department of Materials Science, School of Engineering, University of California, Santa Barbara, CA 91036
J. Chiang
Affiliation:
Institute for Polymers and Organic Solids and Department of Physics, University of California, Santa Barbara, CA 91036 and Department of Materials Science, School of Engineering, University of California, Santa Barbara, CA 91036
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The promise of conjugated polymers as fast response nonlinear optical materials has been emphasized, since the nonresonant third order nonlinear susceptibilities of these π-electron polymers are among the largest measured in any material. For example, third harmonic generation (THG) experiments have shown that for trans-polyacetylene, χ║(3)(3ω:ωω,ω) = (4± 2) × 10-10 esu, where χ║(3) refers to that component of the third order susceptibility tensor with all indices parallel to the chain direction [1]. The large nonlinear response is anisotropic and arises from the π-electrons of the conjugated polymer. The magnitude and anisotropy are comparable to results obtained from single crystals of polydiacetylene-(toluenesulfonate). Given these large χ║(3) values, it is important to develop methods for fabricating chain-aligned (oriented) conjugated polymer films which have optical quality.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 109: Symposium K – Nonlinear Optical Properties of Polymers , 1987 , 283
Copyright
Copyright © Materials Research Society 1988

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References

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