Coddington, I.
, Swann, W.
and Newbury, N.
(2010),
Time-domain spectroscopy of the optical free-induction decay from vibrating molecules, Optics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=903774
(Accessed October 17, 2025)
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Time-domain spectroscopy of the optical free-induction decay from vibrating molecules
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Author(s)
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Abstract
Time-domain spectroscopy using dual, coherent frequency combs is used to measure free-induction decay from a molecular gas sample in the near-IR with a time-domain signal-to-noise ratio of ~106 over a ~6 ns window at 55 fs time resolution (corresponding to the 9 THz source bandwidth) and a frequency/timing accuracy set by the frequency combs. The free-induction decay exhibits the expected periodic pulses from the rephasing of the multiply excited rovibrational levels. This demonstration represents the first high-resolution, high-accuracy, broadband measurement of optical free-induction decay, to our knowledge.Citation
Optics Letters
Volume
35
Issue
9
Pub Type
Journals
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Keywords
frequency comb, optical free induction decay, spectroscopy
Citation
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Created April 26, 2010, Updated February 19, 2017