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基于超快激光的光谱学和传感：在 LIBS、CARS 和太赫兹光谱学中的应用。

Ultrafast laser-based spectroscopy and sensing: applications in LIBS, CARS, and THz spectroscopy.

机构信息

Milton S. Eisenhower Research Center, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723, USA.

Department of Physics and Astronomy, The University of Louisville, KY, USA.

出版信息

Sensors (Basel). 2010;10(5):4342-4372. doi: 10.3390/s100504342. Epub 2010 Apr 29.

DOI:10.3390/s100504342
PMID:22399883
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3292122/
Abstract

Ultrafast pulsed lasers find application in a range of spectroscopy and sensing techniques including laser induced breakdown spectroscopy (LIBS), coherent Raman spectroscopy, and terahertz (THz) spectroscopy. Whether based on absorption or emission processes, the characteristics of these techniques are heavily influenced by the use of ultrafast pulses in the signal generation process. Depending on the energy of the pulses used, the essential laser interaction process can primarily involve lattice vibrations, molecular rotations, or a combination of excited states produced by laser heating. While some of these techniques are currently confined to sensing at close ranges, others can be implemented for remote spectroscopic sensing owing principally to the laser pulse duration. We present a review of ultrafast laser-based spectroscopy techniques and discuss the use of these techniques to current and potential chemical and environmental sensing applications.

摘要

超快脉冲激光器在多种光谱学和传感技术中得到了应用，包括激光诱导击穿光谱（LIBS）、相干拉曼光谱和太赫兹（THz）光谱。无论基于吸收还是发射过程，这些技术的特性都受到信号产生过程中使用超快脉冲的强烈影响。根据所用脉冲的能量，基本的激光相互作用过程主要涉及晶格振动、分子旋转，或者激光加热产生的激发态的组合。虽然其中一些技术目前仅限于近距离传感，但由于激光脉冲持续时间的原因，其他技术也可以用于远程光谱传感。我们对基于超快激光的光谱技术进行了综述，并讨论了这些技术在当前和潜在的化学和环境传感应用中的使用。

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