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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 6 — Mar. 15, 2008
  • pp: 590–592

Highly efficient, low-cost femtosecond Cr 3 + : Li CAF laser pumped by single-mode diodes

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


Optics Letters, Vol. 33, Issue 6, pp. 590-592 (2008)
http://dx.doi.org/10.1364/OL.33.000590


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Abstract

We describe efficient continuous-wave (cw) and cw mode-locked operations of a Cr 3 + : Li CAF laser, pumped by inexpensive single spatial mode laser diodes. Up to 280 mW of cw output power was obtained with 570 mW of absorbed pump power, with a corresponding slope efficiency of 54%. Continuous tuning between 765 and 865 nm was demonstrated using a fused silica prism. A semiconductor saturable absorber mirror was used to initiate and sustain stable, self-starting, mode-locked operation. In cw mode locking, the laser produced 72 fs (FWHM) duration pulses, and 1.4 nJ pulse energy, at an average output power of 178 mW . Electrical to optical conversion efficiencies of 7.8% in mode-locked operation and 12.2% in cw operation were 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: January 4, 2008
Manuscript Accepted: January 23, 2008
Published: March 14, 2008

Citation
Umit Demirbas, Alphan Sennaroglu, Franz X. Kärtner, and James G. Fujimoto, "Highly efficient, low-cost femtosecond Cr3+:LiCAF laser pumped by single-mode diodes," Opt. Lett. 33, 590-592 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-6-590


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