Q-Switched Operation of a-Cut Ho:YAlO₃ Laser
Pumped by a Diode-Pumped 1.91 m Thulium Laser¹

Y. J. Shen, B. Q. Yao*, X. M. Duan, Y. L. Ju, and Y. Z. Wang

National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 15001, China

*e-mail: yaobq08@hit.edu.cn

Received October 25, 2011; in final form, October 30, 2011; published online March 6, 2012

Abstract—Q-switched operation of a room temperature Ho:YAP laser was resonantly end-pumped by a diode-
pumped Tm:YLF laser at 1.91 m. The CW Ho:YAP laser generated 9.9 W of linearly output at 2119.03nm
with beam quality factor of M² ~ 1.46 with respect to absorbed pump power of 19.16 W, corresponding to an
optical-to-optical conversion efficiency of 51.7% and slope efficiency of 60.6%. Under Qswitched operation,
the maximum output power of 9.8 W in relation to 10 kHz pulse repetition frequency (PRF) was obtained, how-
ever, the maximum peak power of 60 kW at the PRF of 5 kHz was demonstrated. At 5 kHz pulse energies of
1.92 mJ with pulse width of 32 ns was achieved.

DOI: 10.1134/S1054660X12040184

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.