Coddington, I.
, Swann, W.
and Newbury, N.
(2008),
Coherent, multiheterodyne spectroscopy using stabilized optical frequency combs, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32809
(Accessed October 9, 2025)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Coherent, multiheterodyne spectroscopy using stabilized optical frequency combs
Published
Author(s)
, ,
Abstract
The broadband, coherent nature of narrow-linewidth fiber frequency combs is exploited to measure the full complex spectrum of a molecular gas through multiheterodyne spectroscopy. We measure the absorption and phase shift experienced by each of 155 000 individual frequency-comb lines, spaced by 100 MHz and spanning from 1495 to 1620 nm, after passing through hydrogen cyanide gas. The measured phase spectrum agrees with the Kramers-Kronig transformation of the absorption spectrum. This technique can provide a full complex spectrum rapidly, over wide bandwidths, and with hertz-level accuracy.Citation
Physical Review Letters
Volume
100
Issue
013902
Pub Type
Journals
Download Paper
Keywords
Frequency combs, HCN spectrum, precision spectroscopy
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact [email protected].
Created January 1, 2008, Updated October 12, 2021