Intracavity absorption spectroscopy of HCl isotopes, H2O, CH4, C2H4, and C2H6 in the 3.1-3.4 μm spectral range using a Cr:CdSe laser

被引：3
|
作者：
Fjodorow, Peter [1 ]
Frolov, Mikhail P. [2 ]
Korostelin, Yuri V. [2 ]
Kozlovsky, Vladimir I. [2 ]
Schulz, Christof [1 ]
Leonov, Stanislav O. [2 ]
Skasyrsky, Yan K. [2 ]
Yuryshev, Nikolai N. [2 ]
机构：
[1] Univ Duisburg Essen, Inst Combust & Gas Dynam React Fluids, Carl Benz Str 199, D-47057 Duisburg, Germany
[2] Russian Acad Sci, P N Lebedev Phys Inst, Leninskiy Prosp 53, Moscow 119991, Russia
来源：
OPTICS EXPRESS | 2022年 / 30卷 / 22期
关键词：
COMB SPECTROSCOPY; DYNAMICS; VAPOR;
D O I：
10.1364/OE.471851
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate the first application of a Cr:CdSe laser for highly-sensitive multi-component intracavity absorption spectroscopy around lambda = 3.1-3.4 mu m. A detection scheme based on an integrated recording of multiple (similar to 70) individual Cr:CdSe laser pulses after a single pump-pulse excitation is reported. The sensitivity of our system corresponds to an effective absorption path length of L-eff 850 m. Exemplary measurements of atmospheric H2O and CH4, and additionally introduced gas-phase HCl, C2H4, or C2H6 are presented. The achieved noise-equivalent detection limits are in the ppb range. Possibilities for further sensitivity enhancement by up to a factor of 10(4) are discussed. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码：40347 / 40356
页数：10
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