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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 11,
  • Issue 4,
  • pp. 041408-
  • (2013)

Large-aperture end-pumped Nd:YAG thin-disk laser directly cooled by liquid

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Abstract

A large-aperture Nd:YAG thin-disk laser directly cooled by liquid is end-pumped by two spatial self-organized laser diode arrays. The pump coupling efficiency reaches as high as 93%. Without any complex pump coupling components, the structure becomes simplified and compact. By optimizing the incident angle of the pump beam, a pump power density of 578 W/cm2 is achieved with a pump uniformity of 5.52%. Up to 1 346-W peak output power with a slope efficiency of 54.9% is obtained when pumping with a long pulse. The near-field pattern of the laser output is uniform.

© 2013 Chinese Optics Letters

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