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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 5 — Mar. 1, 2011
  • pp: 751–753

Picosecond tunable mode locking of a Cr 2 + :ZnSe laser with a nonlinear mirror

Jean-Baptiste Dherbecourt, Adrien Denoeud, Jean-Michel Melkonian, Myriam Raybaut, Antoine Godard, Michel Lefebvre, and Emmanuel Rosencher  »View Author Affiliations


Optics Letters, Vol. 36, Issue 5, pp. 751-753 (2011)
http://dx.doi.org/10.1364/OL.36.000751


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Abstract

We report on a nonlinear mirror (NLM) scheme that enables, for the first time to the best of our best knowledge, tunable mode locking of a Cr 2 + :ZnSe laser in the picosecond regime. The NLM—used as the output coupler of the laser cavity—consists of a periodically poled lithium niobate (PPLN) crystal with a fan-out grating coupled with a dichroic mirror and a wedged dispersive YAG plate. The Cr 2 + :ZnSe laser, pumped by a CW thulium-doped fiber laser, delivers 85 ps pulses at a repetition rate of 220 MHz with a 300 mW average power. Thanks to the use of a fan-out PPLN crystal, we benefit from the wide tunability of the Cr 2 + :ZnSe laser and achieve mode locking over the whole 2.44 2.55 μm range while maintaining a narrow-linewidth emission suitable for time-resolved nonlinear spectroscopy applications.

© 2011 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.4050) Lasers and laser optics : Mode-locked lasers
(190.2620) Nonlinear optics : Harmonic generation and mixing
(230.4320) Optical devices : Nonlinear optical devices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 20, 2010
Manuscript Accepted: January 7, 2011
Published: February 28, 2011

Citation
Jean-Baptiste Dherbecourt, Adrien Denoeud, Jean-Michel Melkonian, Myriam Raybaut, Antoine Godard, Michel Lefebvre, and Emmanuel Rosencher, "Picosecond tunable mode locking of a Cr2+:ZnSe laser with a nonlinear mirror," Opt. Lett. 36, 751-753 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-5-751

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