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
Lasers and Laser Optics
Peilin Li, Qiang Liu, Xing Fu, and Mali Gong, "Large-aperture end-pumped Nd:YAG thin-disk laser directly cooled by liquid," Chin. Opt. Lett. 11, 041408- (2013)