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Nonlinear Optical Properties of Organic Photorefractive Polymers

Published online by Cambridge University Press:  15 February 2011

W. E. Moerner ,
C. A. Walsh ,
S. M. Silence ,
R. J. Twieg ,
T. J. Matray ,
J. C. Scott ,
V. Y. Lee ,
R. D. Miller ,
F. Hache  and
D. M. Burland
...Show all authors
W. E. Moerner
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
C. A. Walsh
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
S. M. Silence
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
R. J. Twieg
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
T. J. Matray
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
J. C. Scott
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
V. Y. Lee
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
R. D. Miller
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
F. Hache
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
D. M. Burland
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
G. C. Bjorklund
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
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Abstract

This paper describes the photorefractive properties of a new and growing class of materials exhibiting the effect, doped nonlinear organic polymers. We show directly using a PMMA-based copolymer with a pendant nonlinear nitroaminotolane chromophore doped with a charge transport agent that the presence of photoconductivity and optical nonlinearity are only necessary, but not sufficient to guarantee that a given materials system will yield measurable photorefractive gratings, rather than gratings due to some other process such as photochromism. To prove photorefractivity unequivocally, direct measurement of the spatial phase shift between the intensity pattern and the index modulation is best, and we summarize a convenient way to do this using two-beam coupling and sample translation. In addition to the photorefractive epoxy materials such as bisA-NPDA:DEH reported earlier (Phys. Rev. Lett. 66, 1846 (1991); Proc. SPIE1560, 278 (1992)), a new PMMA-based copolymer with pendant p-nitroaniline chromophores doped with DEH also shows photorefractive grating formation, with writing speed 100 times higher than that for the epoxy material.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 277: Symposium V – Macromolecular Host-Guest Complexes: Optical, Optoelectronic, and Photorefractive Properties and Applications , 1992 , 121
Copyright
Copyright © Materials Research Society 1992

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References

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