外文题目: Critical power and clamping intensity inside a filament in a flame
作者: Li, Helong; Chu, Wei; Zang, Hongwei; Xu, Huailiang; Cheng, Ya; Chin, See Leang
刊名: Opt. Express
年: 2016 卷: 24 期: 4 页： 3424--3431
英文关键词:

FEMTOSECOND LASER FILAMENTATION; LIGHT FILAMENTS; GENERATION; MEDIA; PULSE; AIR
英文摘要:
We report on measurements of both the critical power for self-focusing of a Ti: Sapphire 800 nm femtosecond laser and the peak intensity clamped inside a single filament in an ethanol-air flame on an alcohol burner array. By observing the shift of focal position of femtosecond laser pulses, we determine the critical power in the flame to be 2.2 +/- 0.3 GW, which is 4-5 times smaller than the usually quoted one in air. The clamped laser intensity inside the filament is measured to be roughly half of that in air. Our results provide insights into the understanding of femtosecond laser filamentation in flames for practical application of combustion diagnostics. (C)2016 Optical Society of America


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1364/OE.24.003424


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