Signal quality improvement using cylindrical confinement for laser induced breakdown spectroscopy

被引：78
作者：
Hou, Zongyu [1 ]
Wang, Zhe [1 ]
Liu, Jianmin [2 ]
Ni, Weidou [1 ]
Li, Zheng [1 ]
机构：
[1] Tsinghua Univ, Tsinghua BP Clean Energy Ctr, Dept Thermal Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China
[2] China Guodian Sci & Technol Res Inst, Nanjing 100034, Jiangsu, Peoples R China
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 13期
基金：
中国国家自然科学基金;
关键词：
OPTICAL-EMISSION; INDUCED PLASMAS; PULSE; ENHANCEMENT; GENERATION; DISCHARGE; ABLATION; PRESSURE;
D O I：
10.1364/OE.21.015974
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In our previous work, we found that there was great potential to improve the pulse-to-pulse signal repeatability using a moderate cylindrical cavity confinement. However, the improvement was achieved only with certain experimental parameters; while under other conditions, there was no improvement or even worse repeatability. In the present work, the experimental configuration was redesigned and unexpected uncertainty from the variation of the laser and cavity alignment and the laser ablated aerosols were avoided. With these two improvements, we demonstrated that the cavity can always increase the signal repeatability. In addition, image taken by ICCD verified that the confinement improved the stability of the plasma morphology as expected. (C) 2013 Optical Society of America
引用
收藏
页码：15974 / 15979
页数：6
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