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Effect of excitation conditions on photostability of 2-(4pyridyl) -5 phenyl)oxazole laser media

机译:激发条件对2-(4-吡啶基)-5苯基)恶唑激光介质光稳定性的影响

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Abstract: A method of photostability examination of dye active media is described. Quantum yield of phototransformation, relative yield of some final photoproducts, as well as laser lifetime of 2- (4pyridyl)-5 phenyl)oxazole (4PyPO) ethanol solutions were measured. These characteristics were studied as functions of dye concentration, excitation power, and pulse duration, as well as type of irradiation (by means of spontaneous or lasing). Transient T-T absorption spectra were monitored. Effects of different additions into solution of T-T absorption and photostability of the medium were investigated. Improvement in lifetime of 4PyPO active media is discussed. !5
机译:摘要:描述了一种染料活性介质的光稳定性检查方法。测量了光转化的量子产率,一些最终光产物的相对产率以及2-(4-吡啶基)-5苯基)恶唑(4PyPO)乙醇溶液的激光寿命。研究了这些特性与染料浓度,激发功率和脉冲持续时间以及辐照类型(通过自发或激光)的关系。监测瞬态T-T吸收光谱。研究了溶液中不同添加量对T-T吸收和光稳定性的影响。讨论了4PyPO活性介质寿命的改进。 !5

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