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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 10 — Oct. 1, 2012
  • pp: 2944–2957

Cross-influence between the two servo loops of a fully stabilized Er:fiber optical frequency comb

Vladimir Dolgovskiy, Nikola Bucalovic, Pierre Thomann, Christian Schori, Gianni Di Domenico, and Stéphane Schilt  »View Author Affiliations


JOSA B, Vol. 29, Issue 10, pp. 2944-2957 (2012)
http://dx.doi.org/10.1364/JOSAB.29.002944


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Abstract

We present a study of the impact of the cross-coupling between the two servo loops used to stabilize the repetition rate frep and the carrier-envelope offset (CEO) frequency fCEO in a commercial Er:fiber frequency comb, based on the combination of experimental measurements and a model of the coupled loops. The developed theoretical model enables us to quantify the influence of the servo-loop coupling on an optical comb line, by simulating the hypothetic case where no coupling would be present. Numerical values for the model were obtained from an extensive characterization of the comb, in terms of frequency noise and dynamic response to a modulation applied to each actuator, for both frep and fCEO. To validate the model, the frequency noise of an optical comb line at 1.56 μm was experimentally measured from the heterodyne beat between the comb and a cavity-stabilized ultranarrow-linewidth laser and showed good agreement with the calculated noise spectrum. The coupling between the two stabilization loops results in a more than 10-fold reduction of the comb mode frequency noise power spectral density in a wide Fourier frequency range.

© 2012 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(140.4050) Lasers and laser optics : Mode-locked lasers
(320.7090) Ultrafast optics : Ultrafast lasers
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: June 4, 2012
Revised Manuscript: August 24, 2012
Manuscript Accepted: September 1, 2012
Published: September 28, 2012

Citation
Vladimir Dolgovskiy, Nikola Bucalovic, Pierre Thomann, Christian Schori, Gianni Di Domenico, and Stéphane Schilt, "Cross-influence between the two servo loops of a fully stabilized Er:fiber optical frequency comb," J. Opt. Soc. Am. B 29, 2944-2957 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-10-2944


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