Sapphire-conductive end-cooling of high power cryogenic Yb:YAG lasers |
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| Authors: | S. Tokita J. Kawanaka M. Fujita T. Kawashima Y. Izawa |
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| Affiliation: | (1) Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita Osaka, 565-0871, Japan;(2) Institute for Laser Technology, 2-6 Yamadaoka, Suita Osaka, 565-0871, Japan;(3) Central Research Laboratory, Hamamatsu Photonics K. K., 5000 Hirakuchi, Hamakita Shizuoka, 434-8601, Japan |
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| Abstract: | ![]()
We have demonstrated a high-power laser oscillator with end-cooling using a sapphire-sandwiched Yb:YAG disk at near liquid nitrogen temperature. An output power of 75 W with a near-diffraction-limited beam was obtained from a 0.6-mm thick activemedium. The slope efficiency and themaximum optical–optical efficiency were 80 and 70%, respectively, with respect to absorbed pump power.This revised version was published online in August 2005 with a corrected cover date. |
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| Keywords: | 42.55.Rz 42.55.Xi |
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