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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. 28, Iss. 5 — May. 1, 2011
  • pp: 1104–1110

Beat-note locking in dual-polarization lasers submitted to frequency-shifted optical feedback

Jérémie Thévenin, Marc Vallet, Marc Brunel, Hervé Gilles, and Sylvain Girard  »View Author Affiliations


JOSA B, Vol. 28, Issue 5, pp. 1104-1110 (2011)
http://dx.doi.org/10.1364/JOSAB.28.001104


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Abstract

We derive a delay-differential equation model that describes continuous-wave (cw) or passively Q-switched (PQS) two-frequency solid-state lasers submitted to frequency-shifted feedback (FSF). The study focuses on the locking of the beat note between the two free-running laser frequencies to a reference external frequency. The locking domain is obtained analytically in the cw regime. The PQS regime is treated by adding a saturable absorber population in the model equations. In this case, numerical simulations permit us to evaluate a locking range that is smaller than in the cw case. We find good agreement between the theoretical predictions and experiments carried out with a cw diode-pumped dual-polarization Nd:YAG laser as well as with previously published experimental results obtained with cw Er:Yb:glass [ Opt. Lett. 32, 1099 (2007)] and PQS Nd:YAG [ Opt. Lett. 33, 2524 (2008)] lasers. Applications of the FSF locking technique include the lidar–radar technique, for which a highly coherent beat note is required.

© 2011 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3520) Lasers and laser optics : Lasers, injection-locked
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 22, 2010
Revised Manuscript: March 10, 2011
Manuscript Accepted: March 10, 2011
Published: April 15, 2011

Citation
Jérémie Thévenin, Marc Vallet, Marc Brunel, Hervé Gilles, and Sylvain Girard, "Beat-note locking in dual-polarization lasers submitted to frequency-shifted optical feedback," J. Opt. Soc. Am. B 28, 1104-1110 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-5-1104

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