Massively Parallel Sensing Of Trace Molecules And Isotopologues With Subharmonic Mid-Ir Frequency Combs

Abstract

We introduce a new platform for mid-infrared dual-comb spectroscopy, based on a pair of broadband subharmonic optical parametric oscillators pumped by two phase-locked thulium-fibre combs. Our system provides fast (7 ms for a single interferogram), moving-parts-free, simultaneous acquisition of 350,000 spectral data points, spaced by 115-MHz intermodal interval over 3.1-5.5 J.1m spectral range. Parallel detection of 22 trace molecules in a gas mixture, including isotopologues containing such isotopes as 13e, 18O, 17O, 15N, 34S, 33S and deuterium, with part-per-billion sensitivity and sub-Doppler resolution has been demonstrated.

Publication Date

10-25-2018

Publication Title

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz

Volume

2018-September

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/IRMMW-THz.2018.8510218

Socpus ID

85056817428 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85056817428

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