6.8-W High Efficiency Yb:YAG Ceramic Laser at Room Temperature

Shinki Nakamura, Hiroaki Yoshioka, Yu Matsubara, Takayo Ogawa, Satoshi Wada

Research output: Contribution to journalArticlepeer-review


A high-power efficient ceramic Yb:YAG laser was demonstrated at a room temperature of 20°C with an Yb concentration of 9.8 at.%, a gain medium of 1 mm, a pumping power of 13.8 W, an output coupler of <i>T</i> = 10%, and a cavity length of 20 mm. A 6.8 W cw output power was obtained with a slope efficiency of 72%. The ceramic Yb:YAG laser exhibited a continuous tunability in the spectral range of 63.5 nm from 1020.1 to 1083.6 nm for <i>T</i> = 1% at a maximum output power of 1.6 W. To the best of our knowledge, this is the first study of the tunability of ceramic Yb:YAG lasers, except crystal Yb:YAG studies.
Original languageEnglish
Pages (from-to)1073-1076
Number of pages4
Issue number0
Publication statusPublished - 2008


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