Measurement of absorption spectra for atmospheric methane by a lidar system with tunable emission wavelength in the range 1.41-4.24 μm

被引：16

作者：

Airapetyan, V. S. ^{[1
]}

机构：

[1] Siberian State Acad Geodesy, Novosibirsk 630108, Russia

来源：

JOURNAL OF APPLIED SPECTROSCOPY | 2009年 / 76卷 / 02期

关键词：

differential absorption and scattering; optical parametric oscillator; nonlinear crystal; personal computer (PC); analog-to-digital converter; Fabry-Perot etalon;

D O I：

10.1007/s10812-009-9152-8

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We have developed, built, and tested an automated differential lidar system for measuring low concentrations of atmospheric gases, based on an optical parametric oscillator tunable in the near IR region. We have calculated the spectral shift of the relative intensities of the individual lines in the nu(3) absorption band of methane. In comparing the measured and calculated spectra, we did not observe any shifts in the nu(3) absorption band of methane. At the same time, in the experimental spectra we observe broadening of the Q branch and the individual lines of the P branch.

引用

页码：268 / 272

页数：5

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