Large-aperture end-pumped Nd:YAG thin-disk laser directly cooled by liquid
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摘要:
A large-aperture Nd:YAG thin-disk laser directly cooled by liquid is end-pumped by two spatial selforganized 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 1346-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.