Study on Near-Infrared Spatial Heterodyne Spectrometer and Detection of Water Vapor

Wei, 熊伟 Xiong; Hailiang, 施海亮 Shi; Yuanjun, 汪元钧 Wang; Haiyan, 罗海燕 Luo; Yonghua, 方勇华 Fang; Yanli, 乔延利 Qiao

doi:10.3788/aos20103005.1511

Cited by 6 publications

(1 citation statement)

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“…Conventional SHS has already been used to learn about the atmospheric environment of our Earth, including monitoring the main greenhouse gases, detecting the content of OH, measuring the speed of wind, etc. Nathaniel R. Gomer and coworkers have indicated that SHS can also be used for the detection of Raman spectra, and they have built a setup of SHRS and achieved some results of pure chemicals.…”

Section: Introductionmentioning

confidence: 99%

Raman spectroscopic detection for liquid and solid targets using a spatial heterodyne spectrometer

Guangxiao

Xiong

Shi

et al. 2015

J. Raman Spectrosc.

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Spatial heterodyne Raman spectroscopy (SHRS) is a new type of effective method for the analysis of structure and composition of liquid and solid targets with the characteristics of no moving parts, high spectral resolution, high optical throughput and large field of view. The technique is very suitable for detecting the targets from long distances or under the conditions with ambient light, which is essential for the exploration of planetary surface. In order to have a better understanding of the ability of SHRS for the detection of liquid and solid targets, a breadboard was designed, built and calibrated. Signal to noise was estimated at different integration time or laser power for carbon tetrachloride. Pure materials or materials contained in bottles were both tested. The mixture of organic liquids or inorganic solids were tested. In order to test the detection ability for natural targets, some composition-unknown rocks and pebbles were tested. The results have shown that SHRS can meet the requirements for the detection of weak Raman signal scattered from artificial or natural targets. Standoff detection of sulfur from 5-m or 10-m distance without using any telescope or collimation optics was also tried to test the high optical throughput of SHRS. The potential feasibility of standoff detection has been proved.

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Section: Introductionmentioning

confidence: 99%