Dye-triplet-state and singlet-oxygen quenching effects in solid state dye lasers

Terence A. King; Mohammad Ahmad; Anthony Gorman; I. Hamblett; Mark D. Rahn

doi:10.1117/12.382759

14 April 2000 Dye-triplet-state and singlet-oxygen quenching effects in solid state dye lasers

Terence A. King, Mohammad Ahmad, Anthony Gorman, I. Hamblett, Mark D. Rahn

Proceedings Volume 3929, Solid State Lasers IX; (2000) https://doi.org/10.1117/12.382759
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

Abstract

The main photodegradation mechanisms of pyrromethene 567 are discussed, and the quantum efficiency of self-sensitized photo-oxidation, the predominant mechanism, was found to be 0.5% in aerated benzene-d₆. Other degradation mechanisms do exist, but the high photostability of the dye in solid host media possibly implies that they are all diffusion controlled. Solid-state dye lasers based on pyrromethene 567 doped poly(methyl methacrylate) with an added singlet oxygen quencher 1,4-diazobicyclo [2,2,2] octane showed a lifetime of 550,000 pulses. A triplet quencher, perylene, provided no improvement. Singlet oxygen quenching is effective in the solid-state whereas triplet quenching is not, presumably due to the slower diffusion rate of dye molecules compared with oxygen.

Citation Download Citation

Terence A. King, Mohammad Ahmad, Anthony Gorman, I. Hamblett, and Mark D. Rahn "Dye-triplet-state and singlet-oxygen quenching effects in solid state dye lasers", Proc. SPIE 3929, Solid State Lasers IX, (14 April 2000); https://doi.org/10.1117/12.382759

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