Kong J, Tang D Y, Chan C C, Lu J, Ueda K, Yagi H, Yanagitani T
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
Opt Lett. 2007 Feb 1;32(3):247-9. doi: 10.1364/ol.32.000247.
We report a high-efficiency diode-end-pumped polycrystalline Yb:Y2O3 ceramic laser. Pumped by a 976 nm laser diode bar and with an absorbed pump power of 2.8 W, cw output power of 1.74 W at 1078 nm, and 0.73 W at 1040 nm were obtained. The slope efficiency was measured to be 82.4% for the 1078 nm laser emission and 57.1% for the 1040 nm laser emission.
