14 April 2000 Dye-triplet-state and singlet-oxygen quenching effects in solid state dye lasers
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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
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.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Terence A. King, Terence A. King, Mohammad Ahmad, Mohammad Ahmad, Anthony Gorman, Anthony Gorman, I. Hamblett, I. Hamblett, Mark D. Rahn, 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); doi: 10.1117/12.382759; https://doi.org/10.1117/12.382759


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