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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 20 — Oct. 15, 2006
  • pp: 3046–3048

Fiber-laser frequency combs with subhertz relative linewidths

W. C. Swann, J. J. McFerran, I. Coddington, N. R. Newbury, I. Hartl, M. E. Fermann, P. S. Westbrook, J. W. Nicholson, K. S. Feder, C. Langrock, and M. M. Fejer  »View Author Affiliations

Optics Letters, Vol. 31, Issue 20, pp. 3046-3048 (2006)

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We investigate the comb linewidths of self-referenced, fiber-laser-based frequency combs by measuring the heterodyne beat signal between two independent frequency combs that are phase locked to a common cw optical reference. We demonstrate that the optical comb lines can exhibit instrument-limited, subhertz relative linewidths across the comb spectra from 1200 to 1720 nm with a residual integrated optical phase jitter of 1 rad in a 60 mHz to 500 kHz bandwidth. The projected relative pulse timing jitter is 1 fs . This performance approaches that of Ti:sapphire frequency combs.

© 2006 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(140.3510) Lasers and laser optics : Lasers, fiber
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Ultrafast Optics

Original Manuscript: June 9, 2006
Revised Manuscript: July 25, 2006
Manuscript Accepted: July 26, 2006
Published: September 25, 2006

W. C. Swann, J. J. McFerran, I. Coddington, N. R. Newbury, I. Hartl, M. E. Fermann, P. S. Westbrook, J. W. Nicholson, K. S. Feder, C. Langrock, and M. M. Fejer, "Fiber-laser frequency combs with subhertz relative linewidths," Opt. Lett. 31, 3046-3048 (2006)

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