9.2-W diode–end–pumped Yb:Y2O3 ceramic laser

Kong, J.; Tang, D. Y.; Zhao, B.; Lu, J.; Ueda, K.; Yagi, H.; Yanagitani, T.
April 2005
Applied Physics Letters;4/18/2005, Vol. 86 Issue 16, p161116
Academic Journal
We report on a high-power diode–end–pumped polycrystalline Yb:Y2O3 ceramic laser. Under the pump power of 27 W, continuous-wave output power of 9.2 W at 1078 nm has been obtained by using an output coupler of R=96%. The laser had a threshold of 3.1 W and a slope efficiency of 41%. Comparative studies on the laser performance between the Yb:Y2O3 ceramic and the Yb:yttrium aluminum garnet (YAG) single crystal show that at the same doping concentration of 8 at. %, higher laser efficiency can be obtained in the Yb:Y2O3 ceramic laser than in the Yb:YAG single crystal laser.


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