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

页码：40347 / 40356

页数：10

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