Diode-Pumped Nd:YGG Continuous-Wave Laser at 1.33 m¹

Y. L. Li^a, *, J. H. Li^b, X. H. Liu^b, J. B. Wu^b, and X. Zhang^b

^a School of OptoElectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China

^b School of Physics, Northeast Normal University, Changchun 130024, China

*e-mail: liyongliang1973@163.com

Received October 14, 2011; in final form, October 15, 2011; published online February 6, 2012

Abstract—We demonstrated a laser-diode pumped Nd-doped yttrium gallium garnet (Nd:YGG) crystal con-
tinuous wave (CW) laser at 1.33 m for the first time to our knowledge. At an incident pump power of 18.5 W,
as high as 3.09 W of CW output power at 1.33 m is achieved. The slope efficiency with respect to the incident
pump power was 21.3%, and the fluctuation of the output power was better than 2.8% in the given 4 h. The
beam quality factor M² is 1.14 and 1.16 for tangential direction and sagittal direction, respectively.

DOI: 10.1134/S1054660X12030097

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