科研之友
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摘要
A novel pump scheme-chamfered-edge-pumping was employed for pumping a planar waveguide laser: A 12 mm-long edge was chamfered as a 0.2 mm wide bevel, pump light from the fast-axis-collimated LID was focused and coupled into the crystal through the chamfered-edge with a pump efficiency of 82%. The single-clad YAG/Nd:YAG/YAG planar waveguide was fabricated by thermal bonding technology with the geometry of 12 mm x 5 mm x 1 mm, which Nd:YAG core was 0.2 mm thick and symmetry claddings were 0.4 mm thick. A maximum output power of 15.5 W at 1064 nm with a slop efficiency of 37%, an optical-optical conversion efficiency of 31 % and a M-2 value of 1.6 in the guided direction was achieved for a pump power of 50 W. The laser system realized a relatively high optical-optical conversion efficiency and excellent beam quality in guided direction.
- 出版日期2008-7
- 单位清华大学
