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Optical Engineering • Open Access • new

Quantum cascade laser-based analyzer for hydrogen sulfide detection at sub-parts-per-million levels
Author(s): Michal Nikodem; Karol Krzempek; Dorota Stachowiak; Gerard Wysocki

Paper Abstract

Due to its high toxicity, monitoring of hydrogen sulfide ( H 2 S ) concentration is essential in many industrial sites (such as natural gas extraction sites, petroleum refineries, geothermal power plants, or waste water treatment facilities), which require sub-parts-per-million sensitivities. We report on a quantum cascade laser-based spectroscopic system for detection of H 2 S in the midinfrared at 7.2    μ m . We present a sensor design utilizing Herriott multipass cell and a wavelength modulation spectroscopy to achieve a detection limit of 140 parts per billion for 1-s integration time.

Paper Details

Date Published: 11 October 2017
PDF: 4 pages
Opt. Eng. 57(1) 011019 doi: 10.1117/1.OE.57.1.011019
Published in: Optical Engineering Volume 57, Issue 1
Show Author Affiliations
Michal Nikodem, Wroclaw Research Ctr. EIT+ (Poland)
Wroclaw Univ. of Science and Technology (Poland)
Karol Krzempek, Wroclaw Univ. of Science and Technology (Poland)
Dorota Stachowiak, Wroclaw Research Ctr. EIT+ (Poland)
Gerard Wysocki, Princeton Univ. (United States)

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