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

Authors :: Kong, J.
Tang, D. Y.
Zhao, B.
Lu, J.
Ueda, K.
Yagi, H.
Yanagitani, T.
Source :: Applied Physics Letters. 4/18/2005, Vol. 86 Issue 16, p161116. 3p. 1 Diagram, 4 Graphs.
Publication Year :: 2005
Abstract: 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. [ABSTRACT FROM AUTHOR]