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Title: Comb segmentation spectroscopy for rapid detection of molecular absorption lines
Authors: Lee, Jaehyun
Lee, Keunwoo
Yang, Jaewon
Kim, Young-Jin
Kim, Seung-Woo
Keywords: Comb Segmentation Spectroscopy
Absorption Lines
Engineering::Mechanical engineering
Issue Date: 2019
Source: Lee, J., Lee, K., Yang, J., Kim, Y.-J., & Kim, S.-W. (2019). Comb segmentation spectroscopy for rapid detection of molecular absorption lines. Optics Express, 27(6), 9088-9096. doi:10.1364/OE.27.009088
Series/Report no.: Optics Express
Abstract: We perform fast comb spectroscopy by dividing the probe comb into several sub-comb segments so as to produce multi-heterodyne beats focused around targeted molecular absorption lines. This concentrated scheme of comb spectroscopy is able to achieve a 30 dB signal-to-noise ratio with just a single shot measurement of 10 μs acquisition time. Such high signal sensitivity is verified by measuring separate absorption lines of H13C14N and 12CO2 gases simultaneously. In addition, atmospheric 12CO2 concentration over a 1.3 km open-air path is traced with a signal repeatability of 15 ppm at a 5 kHz update rate.
ISSN: 1094-4087
DOI: 10.1364/OE.27.009088
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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