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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 11, Iss. 9 — Sep. 1, 2013
  • pp: 091404–

High-power high-brightness 2-\mu m continuous wave laser with a double-end dif fusion-bonded Tm, Ho:YVO4 crystal

Gang Li, Yuqiu Gu, Baoquan Yao, Lianqiang Shan, and Yuezhu Wang  »View Author Affiliations


Chinese Optics Letters, Vol. 11, Issue 9, pp. 091404- (2013)


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Abstract

This letter demonstrates an efficient high-power high-brightness 2-\mu m continuous-wave (CW) laser with double-end, diffusion-bonded Tm, Ho:YVO4 crystal cooled with liquid N2. The reduction in thermal stress in the composite Tm, Ho:YVO4 rod enabled the laser to achieve a laser output power of 23.4 W at 2.05 \mu m, which is 1.37 times higher than that of the non-composite Tm, Ho:YVO4 rod. The corresponding slope efficiency is 37.3% and the optical-optical conversion efficiency is 35.4%. The beam quality M2 factor is about 1.85 at 20 W output level with circularly symmetric beam spot.

© 2013 Chinese Optics Letters

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(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

Citation
Gang Li, Yuqiu Gu, Baoquan Yao, Lianqiang Shan, and Yuezhu Wang, "High-power high-brightness 2-\mu m continuous wave laser with a double-end dif fusion-bonded Tm, Ho:YVO4 crystal," Chin. Opt. Lett. 11, 091404- (2013)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-11-9-091404


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