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Proceedings Paper

Photoluminescence and optical studies of photodegradation in nonlinear optical organic chromophores
Author(s): S. G. Raymond; G. V. M. Williams; My T. T. Do; S. Janssens; B. Lochocki; M. D. H. Bhuiyan; A. J. Kay
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Paper Abstract

Photostability measurements have been made on host-guest films containing amorphous polycarbonate and an organic chromophore with a high 2nd order nonlinear optical figure of merit. We find that the rate of photodegradation strongly depends on the oxygen partial pressure. At very low oxygen partial pressures (1.4×10-5 bar) the average number of photons required to photodegrade a chromophore is as high as 1×109 at 655 nm. Encapsulation leads to an initial rapid decrease in the photodegradation rate due to the trapped oxygen and a gradual photodegradation where 2×109 photons are required to photodegrade a chromophore. There is an anomalous increase and then decrease in the photoluminescence intensity during ultraviolet irradiation.

Paper Details

Date Published: 21 May 2009
PDF: 7 pages
Proc. SPIE 7354, Nonlinear Optics and Applications III, 735408 (21 May 2009); doi: 10.1117/12.820835
Show Author Affiliations
S. G. Raymond, Industrial Research Ltd. (New Zealand)
G. V. M. Williams, Industrial Research Ltd. (New Zealand)
My T. T. Do, Industrial Research Ltd. (New Zealand)
S. Janssens, Industrial Research Ltd. (New Zealand)
B. Lochocki, Industrial Research Ltd. (New Zealand)
M. D. H. Bhuiyan, Industrial Research Ltd. (New Zealand)
A. J. Kay, Industrial Research Ltd. (New Zealand)

Published in SPIE Proceedings Vol. 7354:
Nonlinear Optics and Applications III
Mario Bertolotti, Editor(s)

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