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Two-Photon Absorbing Organic Chromophores for Optical Limiting

Published online by Cambridge University Press:  03 September 2012

J. E. Ehrlich ,
X. L. Wu ,
I.-Y. S. Lee ,
A. A. Heikal ,
Z.-Y. Hu ,
H. Röckel ,
S. R. Marder  and
J. W. Perry
J. E. Ehrlich
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109
X. L. Wu
Affiliation:
Beckman Institute, California Institute of Technology, Pasadena, CA 91125
I.-Y. S. Lee
Affiliation:
Beckman Institute, California Institute of Technology, Pasadena, CA 91125
A. A. Heikal
Affiliation:
Beckman Institute, California Institute of Technology, Pasadena, CA 91125
Z.-Y. Hu
Affiliation:
Beckman Institute, California Institute of Technology, Pasadena, CA 91125
H. Röckel
Affiliation:
Beckman Institute, California Institute of Technology, Pasadena, CA 91125
S. R. Marder
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 Beckman Institute, California Institute of Technology, Pasadena, CA 91125
J. W. Perry
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109
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Abstract

Strong optical limiting and large two-photon absorptivities are reported for a class of bisdonor diphenylpolyene derivatives with varying polyene bridge lengths. These molecules exhibit strong optical limiting using nanosecond pulses over a broad spectral range. Bis(diphenylamino)stilbene exhibits a 90 nm red shift of its optical limiting band, and only a minimal shift of about 13 nm of its lowest one-photon electronic absorption band relative to bis(di-n-butylamino)stilbene. This suggests a potential for broadband optical limiting with high transparency using mixtures of such compounds. Pulse width dependent nonlinear transmission measurements suggest that two-photon pumped excited-state absorption contributes significantly to the limiting of nanosecond pulses.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 479: Symposium S – Materials for Optical Limiting II , 1997 , 9
Copyright
Copyright © Materials Research Society 1997

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