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Preparation of Thin Film Phthalocyanine Glasses for Optical Limiting

Published online by Cambridge University Press:  15 February 2011

R. D. George ,
A. W. Snow ,
J. S. Shirk ,
S. R. Flom  and
R. G. S. Pong
R. D. George
Affiliation:
Naval Research Laboratory, Washington, DC 20375.
A. W. Snow
Affiliation:
Naval Research Laboratory, Washington, DC 20375.
J. S. Shirk
Affiliation:
Naval Research Laboratory, Washington, DC 20375.
S. R. Flom
Affiliation:
Naval Research Laboratory, Washington, DC 20375.
R. G. S. Pong
Affiliation:
Naval Research Laboratory, Washington, DC 20375.
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Abstract

To explore the use of phthalocyanine materials as a solid-state component in an optical limiter, the issues of morphology, film processing and optical limiter activity/stability are investigated. Metal-free and lead phthalocyanine films with glassy morphologies are obtained by chemically functionalizing the ring periphery with an amine-epoxy substitution. Uniform films were obtained by a shearing technique. Comparative optical measurements are made on the amine-epoxy lead phthalocyanine compound as a concentrated solution and as a glassy thin film. Both the solution and film are reverse saturable absorbers at 590 nm. The concentrated solution is a very effective optical limiter. The glassy thin film is susceptible to damage (cavitation caused by the incident beam) and performs comparably only at low incident energies. A liquid matrix may have the benefit of self-healing such damage.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 374: Symposia ZB – Materials for Optical Limiting , 1994 , 275
Copyright
Copyright © Materials Research Society 1995

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