Chinese Optics Letters, 2018, 16 (3): 033201, Published Online: Jul. 13, 2018
Polarization-gated filament-induced remote breakdown spectroscopy Download: 665次
120.0280 Remote sensing and sensors 260.5430 Polarization 300.6365 Spectroscopy, laser induced breakdown
Abstract
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.
Hao Guo, Zhongbin Zhu, Tiejun Wang, Na Chen, Yaoxiang Liu, Jianhao Zhang, Haiyi Sun, Jiansheng Liu, Ruxin Li. Polarization-gated filament-induced remote breakdown spectroscopy[J]. Chinese Optics Letters, 2018, 16(3): 033201.