外文题目: Range extension in laser-induced breakdown spectroscopy using femtosecond-nanosecond dual-beam laser system
作者: Chu, Wei; Zeng, Bin; Li, Ziting; Yao, Jinping; Xie, Hongqiang; Li, Guihua; Wang, Zhanshan; Cheng, Ya
刊名: Appl. Phys. B-Lasers Opt.
年: 2017 卷: 123 期: 6 文章编号：173
英文关键词:

NONLINEAR OPTICS; FILAMENTATION; AIR; OPERATION; PULSES; WATER; GAS
英文摘要:
We extend the detection range of laser-induced breakdown spectroscopy by combining high-intensity femtosecond laser pulses with high-energy nanosecond - CO2 laser pulses. The femtosecond laser pulses ionize the molecules and generate filament in air. The free electrons generated in the self-confined plasma channel by the femtosecond laser serve as the seed electrons which cause efficient avalanche ionization in the nanosecond - CO2 laser field. We show that the detection distance has been extended by three times with the assistance of femtosecond laser filamentation.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1007/s00340-017-6749-0


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