Frequency-comb-referenced molecular spectroscopy in the mid-infrared region

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http://hdl.handle.net/10138/28130

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Vainio , M , Merimaa , M & Halonen , L 2011 , ' Frequency-comb-referenced molecular spectroscopy in the mid-infrared region ' , Optics Letters , vol. 36 , no. 21 , pp. 4122-4144 . https://doi.org/10.1364/OL.36.004122

Title: Frequency-comb-referenced molecular spectroscopy in the mid-infrared region
Author: Vainio, Markku; Merimaa, Mikko; Halonen, Lauri
Contributor: University of Helsinki, Molecular Science
University of Helsinki, Molecular Science
Date: 2011
Language: eng
Number of pages: 3
Belongs to series: Optics Letters
ISSN: 0146-9592
URI: http://hdl.handle.net/10138/28130
Abstract: A simple method for absolute frequency measurements of molecular transitions in the mid-infrared region is reported. The method is based on a cw singly-resonant optical parametric oscillator (SRO), which is tunable from 3.2 to 3.45 µm. The mid- infrared frequency of the SRO is referenced to an optical frequency comb through its pump and signal beams. Sub-Doppler spectroscopy and absolute frequency measurement of the P(7) transition of the ν3 band of CH4 are demonstrated.
Subject: 114 Physical sciences
116 Chemical sciences
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