新型便携式激光诱导击穿光谱系统综述

本文主要综述了国内外便携式激光诱导击穿光谱(LIBS)系统的研究进展和应用情况。目前该系统主要针对金属元素进行检测,对非金属等轻元素的定量分析需要较大能量的激光激发,但受限于激光器和光谱仪等组件体积的影响,研发便携式、高精度LIBS系统有较高难度。本文针对全元素检测便携设备的研发,利用限域和高压放电脉冲得到了增强的LIBS信号,降低了激光能量,从物理机理上给出了便携式LIBS设备研发的新方向。

Review of new type portable laser-induced breakdown spectroscopy system

The development of portable laser induced breakdown spectroscopy (LIBS) both in China and abroad is reviewed in this paper. At present, most of the portable LIBS systems are aiming at detecting metallic elements. In order to analyze the samples containing light elements, a high power laser is necessary. But limited by the volume of laser and spectrograph, it is hard to produce a smaller laser with high laser power output and difficult to analyze light elements quantitatively with a low power laser. So, there is an obstacle to develop the high precision and portable LIBS systems. Aiming at full elements detection, the signal intensity will be enhanced and the power of excitation energy will be increased by spatial confined and high voltage discharged pulse,which can physically provide the development direction of portable LIBS system.