Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

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.

Time-domain spectroscopy of the optical free-induction decay from vibrating molecules

Published

Author(s)

Ian R. Coddington, William C. Swann, Nathan R. Newbury

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

Keywords

frequency comb, optical free induction decay, spectroscopy

Citation

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 8, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created April 26, 2010, Updated February 19, 2017
Was this page helpful?