光反馈腔衰荡光谱技术中的数据处理

谭中奇; 吴素勇; 刘贱平; 杨开勇; 龙兴武

doi:doi:10.11884/hplpb201426.101006

强激光与粒子束, 2014, 26 (10): 101006, 网络出版: 2014-12-08

光反馈腔衰荡光谱技术中的数据处理

Spectrum data processing in optical-feedback cavity ring-down spectroscopy

论文大纲

谭中奇 ^*吴素勇刘贱平杨开勇龙兴武

作者单位

国防科学技术大学光电科学与工程学院, 长沙 410073

腔衰荡光谱技术光反馈光谱纹波数据处理 cavity ring-down spectroscopy optical feedback spectral ripple data processing

摘要

在光反馈式腔衰荡光谱技术中，光谱数据的处理因一种特殊的光谱纹波现象而变得困难。以6 590.8~6 591.6 cm-1光谱范围内水汽分子的光反馈式腔衰荡光谱为基础，根据光谱纹波效应的特性分析结果，提出了一种简单的数据处理方法。利用该方法确定了6 590.871 cm-1处水汽分子吸收谱线的线宽约为0.100 3 cm-1，这与Hitran数据库提供的线宽结果仅有0.002 cm-1的误差，充分验证了该方法的有效性。

Abstract

In optical-feedback cavity ring-down spectroscopy (OF-CRDS), the data processing of the measured spectrum is often a troubling problem for a special spectral phenomenon called spectral ripple. With an OF-CRDS example of H2O molecule in the spectral range of 6 590.8-6 591.6 cm-1, a data processing method based on the characteristics analyses of spectral ripple is demonstrated. The linewidth of the H2O molecule at 6 590.871 cm-1 is determined as about 0.100 3 cm-1 with this method and its difference compared to the calculated result from Hitran database is 0.002 cm-1, which verifies the effectiveness of this method.

参考文献

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谭中奇, 吴素勇, 刘贱平, 杨开勇, 龙兴武. 光反馈腔衰荡光谱技术中的数据处理[J]. 强激光与粒子束, 2014, 26(10): 101006. Tan Zhongqi, Wu Suyong, Liu Jianping, Yang Kaiyong, Long Xingwu. Spectrum data processing in optical-feedback cavity ring-down spectroscopy[J]. High Power Laser and Particle Beams, 2014, 26(10): 101006.

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