The Research of Spatial Heterodyne Raman Spectroscopy with Standoff Detection

• Published in: Guang pu xue yu guang pu fen xi Vol. 36; no. 12; p. 3951
• Main Authors: Hu, Guang-xiao, Xiong, Wei, Luo, Hai-yan, Shi, Hai-liang, Li, Zhi-wei, Shen, Jing, Fang, Xue-jing
• Format: Journal Article
• Language: Chinese
• Published: China 01.12.2016
• ISSN: 1000-0593
• DOI: 10.3964/j.issn.1000-0593(2016)12-3951-07

Spatial heterodyne Raman spectroscopy (SHRS) is a new type of Raman spectroscopic detection technique with characteristics of high optical throughout, high spectral resolution, and no moving parts. SHRS is very suitable for the planetary exploration missions, which can be used to the analysis of minerals and find the biomarkers maybe exist on the surface of planetary. The authors have applied the technique to the standoff Raman spectroscopic detection, analyzed the main characteristics, including spectral resolution, bandpass and signal to noise (SNR), of standoff SHRS and proved it through experiments. The basic theory of standoff SHRS has been described briefly while a breadboard has been designed, built and calibrated. On the basis, the Raman spectra of some inorganic solids, organic liquids and some natural minerals have been achieved at a distance of 10 m, the SNR of the breadboard has been estimated. Due to the poor adjustment and the defects of the optical elements, the breadboard is far away from an i