Experimental results of measuring the threshold power density of stimulated emission in coumarin-30 dye solutions with ZnO nanoparticles upon irradiation with femtosecond laser pulses are presented. It is shown that the stimulated emission thresholds of coumarin-30 dye solutions with incorporated ZnO nanoparticles upon irradiation with femtosecond laser pulses are approximately by 3 orders of magnitude higher than the stimulated emission thresholds of coumarin-30 dye solutions with incorporated ZnO nanoparticles irradiated with nanosecond laser pulses.

中文翻译：

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掺入 ZnO 纳米颗粒的 Coumarin-30 染料乙醇溶液在飞秒激光脉冲照射下的受激发射阈值

介绍了在飞秒激光脉冲照射下，用 ZnO 纳米颗粒测量香豆素 30 染料溶液中受激发射的阈值功率密度的实验结果。结果表明，掺入 ZnO 纳米颗粒的香豆素-30 染料溶液在飞秒激光脉冲照射下的受激发射阈值比掺入 ZnO 纳米颗粒的香豆素-30 染料溶液的受激发射阈值高约 3 个数量级。激光脉冲。