The polarization characteristics of single shot nanosecond laser-induced breakdown spectroscopy of Al  

作　　者：刘佳 陶海岩 高勋 郝作强 林景全 

机构地区：[1]Changchun University of Science and Technology

出　　处：《Chinese Physics B》2013年第4期281-285,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 60978014, 11074027, 61178022, 11274053, and 11211120156);the Fundsfrom Science and Technology Department of Jilin Province, China (Grant Nos. 20090523, 20100521, 20100168, and 20111812);Funds from Education Department of Jilin Province

摘　　要：The polarization-resolved laser-induced breakdown spectroscopy （PRLIBS） technique, which can significantly reduce the polarized emission from laser plasma by placing a polarizer in front of the detector, is a powerful tool to improve the line-to-continuum ratio in LIBS applications. It is shown that the continuum emission from the plasma produced through ablating an Al sample by nanosecond laser pulses is much more polarized than the discrete line emission with the singlepulse PRLIBS technique. The effects of laser fluence and detection angle on the Al polarization spectrum are systematically explored experimentally. The calculated result of the polarization spectrum as a function of laser fluence shows that it is in agreement with the experimental observations.The polarization-resolved laser-induced breakdown spectroscopy （PRLIBS） technique, which can significantly reduce the polarized emission from laser plasma by placing a polarizer in front of the detector, is a powerful tool to improve the line-to-continuum ratio in LIBS applications. It is shown that the continuum emission from the plasma produced through ablating an Al sample by nanosecond laser pulses is much more polarized than the discrete line emission with the singlepulse PRLIBS technique. The effects of laser fluence and detection angle on the Al polarization spectrum are systematically explored experimentally. The calculated result of the polarization spectrum as a function of laser fluence shows that it is in agreement with the experimental observations.

关 键 词：polarization-resolved laser-induced breakdown spectroscopy laser plasma S/N ratio 

分 类 号：TN247[电子电信—物理电子学]