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Comparative investigations of the spontaneous and stimulated emissions from nitrogen molecules in ai

上海光学精密机械研究所 免费考研网/2018-05-06

外文题目: Comparative investigations of the spontaneous and stimulated emissions from nitrogen molecules in air with femtosecond laser excitation pulses
作者: Li, Ziting; Chu, Wei; Zeng, Bin; Yao, Jinping; Li, Guihua; Xie, Hongqiang; Wang, Zhanshan; Cheng, Ya
刊名: J. Phys. B-At. Mol. Opt. Phys.
年: 2016 卷: 49 期: 6 文章编号:65602
英文关键词:
femtosecond laser filamentation; fluorescence emission; air laser
SPECTROSCOPY; GAS
英文摘要:
We report on experimental investigations on the spontaneous and stimulated emissions from excited nitrogen molecules generated in both linearly and circularly polarized intense laser fields. The spontaneous emission is measured from the side direction of the laser-induced filament whereas the stimulated emission generated by seed amplification is measured in the forward direction of the laser propagation. The comparison between the signal intensities of the spontaneous fluorescence emission and the seed-amplified stimulated emission provides an insight into the population inversion generated in nitrogen molecules with circularly polarized femtosecond laser pulses.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1088/0953-4075/49/6/065602


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