Photoluminescence and optical studies of photodegradation in nonlinear optical organic chromophores

S. G. Raymond; G. V. M. Williams; My T. T. Do; S. Janssens; B. Lochocki; M. D. H. Bhuiyan; A. J. Kay

doi:10.1117/12.820835

21 May 2009 Photoluminescence and optical studies of photodegradation in nonlinear optical organic chromophores

S. G. Raymond, G. V. M. Williams, My T. T. Do, S. Janssens, B. Lochocki, M. D. H. Bhuiyan, A. J. Kay

Proceedings Volume 7354, Nonlinear Optics and Applications III; 735408 (2009) https://doi.org/10.1117/12.820835
Event: SPIE Optics + Optoelectronics, 2009, Prague, Czech Republic

Abstract

Photostability measurements have been made on host-guest films containing amorphous polycarbonate and an organic chromophore with a high 2^nd 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.

Citation Download Citation

S. G. Raymond, G. V. M. Williams, My T. T. Do, S. Janssens, B. Lochocki, M. D. H. Bhuiyan, and A. J. Kay "Photoluminescence and optical studies of photodegradation in nonlinear optical organic chromophores", Proc. SPIE 7354, Nonlinear Optics and Applications III, 735408 (21 May 2009); https://doi.org/10.1117/12.820835

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