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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. 26, Iss. 1 — Jan. 1, 2009
  • pp: 64–79

Comparative investigation of diode pumping for continuous-wave and mode-locked Cr 3 + : Li CAF lasers

Umit Demirbas, Alphan Sennaroglu, Franz X. Kärtner, and James G. Fujimoto  »View Author Affiliations


JOSA B, Vol. 26, Issue 1, pp. 64-79 (2009)
http://dx.doi.org/10.1364/JOSAB.26.000064


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Abstract

Cr 3 + doped colquiriites are promising solid-state gain media for developing inexpensive and highly efficient tunable continuous-wave (cw) and femtosecond lasers. Among Cr 3 + doped colquiriites, Cr 3 + : Li CAF has superior thermal properties enabling high-power operation with standard laser cavities. In this study we present detailed laser experiments with Cr 3 + : Li CAF , which achieve laser performance approaching that of the much more expensive Ti:sapphire laser technology. Inexpensive, new, multimode ( 1.5 W ) and single-mode ( 150 mW ) diode lasers were used as pump sources. With multimode diode pumping, cw output powers exceeding 1 W and mode-locked pulse energies as high as 2.8 nJ were obtained. Using single-mode diode pumping, up to 280 mW of cw output power with 54% slope efficiency and continuous tuning between 765 and 865 nm were demonstrated. In cw mode-locking, 72 fs , 1.4 nJ pulses were obtained, and an electrical-to-optical conversion efficiency of 7.8% was demonstrated.

© 2008 Optical Society of America

OCIS Codes
(140.3460) Lasers and laser optics : Lasers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3600) Lasers and laser optics : Lasers, tunable
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 25, 2008
Revised Manuscript: September 22, 2008
Manuscript Accepted: October 12, 2008
Published: December 15, 2008

Citation
Umit Demirbas, Alphan Sennaroglu, Franz X. Kärtner, and James G. Fujimoto, "Comparative investigation of diode pumping for continuous-wave and mode-locked Cr3+:LiCAF lasers," J. Opt. Soc. Am. B 26, 64-79 (2009)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-26-1-64

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