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TitlePhotostability enhancement studies on zwitterionic chromophores for nonlinear optics
Publication TypeConference Paper
Year of Publication2010
AuthorsRaymond, S.G., Janssens S., Do M.T.T., Williams G.V.M., Denton N., Anderson J., and Bhuiyan M.D.H.
Conference NameProceedings of SPIE - The International Society for Optical Engineering
Date Published2010
KeywordsAmorphous films, Amorphous polycarbonates, Beta carotene, Chromophores, Figure of merit, Non-linear optical, Nonlinear optics, Optical intensities, Optical materials, Organic chromophores, Oxygen, Oxygen depletion, Photo-stability, Photonic devices, Quantum efficiency, Semiconductor quantum dots, Singlet oxygen
AbstractOptical and photostability measurements have been made on nonlinear optical films containing amorphous polycarbonate and an organic chromophore that has a high 2nd order nonlinear optical figure of merit. We show that the decrease in the photodegradation quantum efficiency with increasing optical intensity can be modelled in terms of oxygen depletion by oxygen-mediated chomophore photodegradation. The addition of a known singlet oxygen quencher, beta carotene, leads to a 1100% decrease in the photodegradation quantum efficiency. © 2010 Copyright SPIE - The International Society for Optical Engineering.

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