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Study of solvent effect in laser emission from Coumarin 540 dye solution

机译：香豆素540染料溶液激光发射中溶剂效应的研究

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摘要

The results of a brief investigation of the amplified spontaneous emission and lasing characteristics ofCoumarin 540 dye in as many as ten different solvents are reported. It has been found that C 540 dye solutions contained within a rectangular quartz cuvette give laser emission with well resolved equally spaced modes when pumped with a 476 nm beam. The modes were found to originate from the subcavities formed by the plane-parallel walls of the cuvette containing the high-gain medium. While the quantum yield remains a decisive factor, a clear correlation between the total width of the emission spectra and the refractive indices of the solvents of the respective samples has been demonstrated. The well-resolved mode structure exhibited by the emission spectra gives clear evidence of the lasing action taking place in the gain medium, and the number of modes enables us to compare the gain of the media in different samples. A detailed discussion of the solvent effect in the lasing characteristics of C540 in different solutions is given.
机译：简要研究了香豆素540染料在多达十种不同溶剂中的放大自发发射和激光发射特性的结果。已经发现矩形石英比色皿中所含的C 540染料溶液在被476 nm光束泵浦时能以分辨良好的等距模式发出激光。发现这些模式源自包含高增益介质的比色杯的平行平面壁形成的子腔。尽管量子产率仍然是决定性因素，但已证明发射光谱的总宽度与各个样品的溶剂的折射率之间存在明显的相关性。发射光谱显示的分辨良好的模态结构清楚地表明了在增益介质中发生的激光作用，并且模态的数量使我们能够比较不同样品中介质的增益。详细讨论了在不同溶液中溶剂对C540激光发射特性的影响。

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