Knabe, K.
, Williams, P.
, Giorgetta, F.
, Radunsky, M.
, Armacost, C.
, Crivello, S.
and Newbury, N.
(2013),
Absolute spectroscopy of N2O near 4.5 um with a comb-calibrated, frequency-swept quantum cascade laser spectrometer, Optics Express, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=912727
(Accessed December 14, 2024)
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Absolute spectroscopy of N2O near 4.5 um with a comb-calibrated, frequency-swept quantum cascade laser spectrometer
Published
Author(s)
, , , Michael Radunsky, Chris Armacost, Sam Crivello,
Abstract
We present absolute line center frequencies for 24 fundamental nu-3 ro-vibrational P-branch transitions near 4.5 um in N2O with an absolute frequency uncertainty of 800 kHz. The spectra were acquired with a swept laser spectrometer consisting of an external-cavity quantum cascade laser whose instantaneous frequency was continuously tracked against a near-infrared frequency comb. The measured absorbance profiles have a well-calibrated frequency axis, and are fitted to determine absolute line center values. We discuss the main sources of uncertainty.Citation
Optics Express
Volume
21
Issue
1
Pub Type
Journals
Download Paper
Keywords
Spectroscopy, quantum cascade laser, nitrous oxide, N2O, optical frequency comb, mid-infrared
Citation
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Created January 13, 2013, Updated October 12, 2021