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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 16 — Aug. 15, 2014
  • pp: 4755–4757

Efficient Q-switched Ho:GdVO4 laser resonantly pumped at 1942  nm

B. Q. Yao, Y. Ding, X. M. Duan, T. Y. Dai, Y. L. Ju, L. J. Li, and W. J. He  »View Author Affiliations


Optics Letters, Vol. 39, Issue 16, pp. 4755-4757 (2014)
http://dx.doi.org/10.1364/OL.39.004755


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Abstract

An efficient 2 μm room-temperature Q-switched Ho:GdVO4 laser end-pumped by a 1942 nm Tm-fiber laser is demonstrated. To our knowledge, this is the first report of Q-switched performance of Ho:GdVO4 crystal. A maximum CW output power of 6.85 W under the absorbed pump power of 24.1 W was obtained with a slope efficiency of 39.5% at a temperature of 17°C. With the same absorbed pump power, a maximum output energy per pulse of about 0.9 mJ and minimum pulse width of 4.7 ns were obtained at the pulsed repetition frequency (PRF) of 5 kHz, corresponding to a peak power of approximately 187.2 kW.

© 2014 Optical Society of America

OCIS Codes
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 4, 2014
Revised Manuscript: July 10, 2014
Manuscript Accepted: July 13, 2014
Published: August 7, 2014

Citation
B. Q. Yao, Y. Ding, X. M. Duan, T. Y. Dai, Y. L. Ju, L. J. Li, and W. J. He, "Efficient Q-switched Ho:GdVO4 laser resonantly pumped at 1942  nm," Opt. Lett. 39, 4755-4757 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-16-4755


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