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Reverse Saturable Absorption and Induced Thermal Effects in Chlorophyll ‘A’

Published online by Cambridge University Press:  03 September 2012

J. M. Robertson  and
G. Bourhill
J. M. Robertson
Affiliation:
Defence Evaluation and Research Agency (Malvern), St. Andrews Road, Malvern, Worcs., WR14 3PS, UK, jrobertson@dra.hmg.gb, gbourhill@dra.hmg.gb
G. Bourhill
Affiliation:
Defence Evaluation and Research Agency (Malvern), St. Andrews Road, Malvern, Worcs., WR14 3PS, UK, jrobertson@dra.hmg.gb, gbourhill@dra.hmg.gb
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Abstract

The nonlinear optical effects of chlorophyll ‘a’ have been determined using an array of measurement techniques. Regions of spectral interest exhibiting induced excited state absorption were identified with transient absorption spectroscopy measurements. At specific wavelengths within these regions, the dye was characterised using the Z-scan technique. Additional measurements were made to complement the latter results including a focused aperture experiment in which thermal defocusing and scattering mechanisms were identified.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 479: Symposium S – Materials for Optical Limiting II , 1997 , 299
Copyright
Copyright © Materials Research Society 1997

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