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Nonlinear Optical Properties of Ladder Polymers and Their Model Compound

Published online by Cambridge University Press:  21 February 2011

Samson A. Jenekhe ,
Michael Roberts ,
Ashwini K. Agrawal ,
Jeffrey S. Meth  and
Herman Vanherzeele
Samson A. Jenekhe
Affiliation:
Department of Chemical Engineering, University of Rochester, Rochester, NY 14627
Michael Roberts
Affiliation:
Department of Chemical Engineering, University of Rochester, Rochester, NY 14627
Ashwini K. Agrawal
Affiliation:
Department of Chemical Engineering, University of Rochester, Rochester, NY 14627
Jeffrey S. Meth
Affiliation:
Central Research and Development Department, The Du Pont Company, P.O. Box 80356, Wilmington, DE, 19880–0356
Herman Vanherzeele
Affiliation:
Central Research and Development Department, The Du Pont Company, P.O. Box 80356, Wilmington, DE, 19880–0356
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Abstract

The third order nonlinear optical properties of thin films of polybenzimidazobenzophenanthroline ladder (BBL) and semi–ladder (BBB) polymers and their model compound cis–BBB were investigated by picosecond, third harmonic generation. The χ(3) (−3ω, ω ω, ω) spectrum of BBL, BBB, and cis-BBB was obtained in the wavelength range 1.0–2.4µm and shown to exhibit a three–photon peak at respectively 1.695, 1.695, and 1.50 µm. The magnitude of the three–photon enhanced χ(3) was 6.40×10−11, 3.15×10−11, and 0.77×10−11 esu, respectively, for BBL, BBB, and cis–BBB. The results show that the χ(3) of BBL and BBB is enhanced by a factor of 50 and 17, respectively, relative to the model compound cis–BBB at 1.05µm.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 214: Symposium R1 – Optical and Electrical Properties of Polymers , 1990 , 55
Copyright
Copyright © Materials Research Society 1991

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References

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