High-Efficiency Continuous-Wave and Q-Switched Operation
of a Resonantly Pumped Ho:YAP Ring Laser¹

T. Y. Dai, Y. L. Ju, Y. J. Shen, W. Wang, B. Q. Yao*, and Y. Z. Wang

National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China

*e-mail: daitongyu2006@126.com

Received March 21, 2012; in final form, April 7, 2012; published online July 9, 2012

Abstract—We demonstrated continuous-wave (CW) and Q-switched operation of a room-temperature
Ho:YAP ring laser that is resonantly end-pumped by a diode-pumped Tm:YLF laser at 1.91 m. Continuous
wave output power of 3 W at 2119 nm is obtained under the absorbed pump power of 10.17 W, corresponding
to a slope efficiency of 60%. For the Q-switched regime the maximum pulse energy of 1.58 mJ and the mini-
mum pulse width of 590 ns at the repetition rate of 1 kHz are achieved.

DOI: 10.1134/S1054660X12080087

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