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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 9 — May. 1, 2010
  • pp: 1395–1397

Time-domain spectroscopy of molecular free-induction decay in the infrared

Ian Coddington, William C. Swann, and Nathan R. Newbury  »View Author Affiliations

Optics Letters, Vol. 35, Issue 9, pp. 1395-1397 (2010)

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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 10 6 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.

© 2010 U.S. Government

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(140.4050) Lasers and laser optics : Mode-locked lasers
(320.7100) Ultrafast optics : Ultrafast measurements

ToC Category:
Ultrafast Optics

Original Manuscript: November 23, 2009
Revised Manuscript: February 18, 2010
Manuscript Accepted: March 2, 2010
Published: April 26, 2010

Ian Coddington, William C. Swann, and Nathan R. Newbury, "Time-domain spectroscopy of molecular free-induction decay in the infrared," Opt. Lett. 35, 1395-1397 (2010)

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