Polarization-gated filament-induced remote breakdown spectroscopy

被引：7
作者：
Guo, Hao [1 ,2 ]
Zhu, Zhongbin [1 ,3 ]
Wang, Tiejun [1 ,2 ]
Chen, Na [1 ,2 ]
Liu, Yaoxiang [1 ,2 ]
Zhang, Jianhao [1 ,2 ]
Sun, Haiyi [1 ]
Liu, Jiansheng [1 ,2 ]
Li, Ruxin [1 ,2 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Shanghai Univ, Shanghai 200444, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2018年 / 16卷 / 03期
关键词：
BIOLOGICAL-MATERIALS; LASER; PULSES;
D O I：
10.3788/COL201816.033201
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate a simple technique to filter out the continuum background in filament-induced remote breakdown spectroscopy. By inserting a polarizer before the detector, the continuum background was reduced by more than 42% in filament-induced breakdown spectroscopy at a distance of 3.8 m, while the fluorescence intensity of aluminum atomic lines remains constant. Supercontinuum through self-phase modulation during filamentation mainly contributes to the continuum background. The polarization-gated technique provides a simple way to remove the continuum background in filament-induced remote breakdown spectroscopy.
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页数：4
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