All-Solid-State Intracavity Frequency-Doubled
Nd:Y_0.36Gd_0.64VO₄GdCa₄O(BO₃)₃ Green Laser
under Direct 880 nm Pumping¹

Y. L. Li*, T. Y. Ni, T. Y. Zhang, Z. H. Tao, and Y. H. Zeng

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

*e-mail: liyongliang1973@163.com

Received August 24, 2011; published online December 28, 2011

Abstract—We report a green laser at 532 nm generation by intracavity frequency doubling of a continuous
wave (CW) laser operation of a 1064 nm Nd:Y_0.36Gd_0.64VO₄ laser under in-band diode pumping at 880 nm. An
GdCa₄O(BO₃)₃ (GdCOB) crystal, cut for critical type I phase matching at room temperature is used for second
harmonic generation of the laser. At an incident pump power of 17.8 W, as high as 2.92 W of CW output power
at 532 nm is achieved. The optical–to–optical conversion efficiency is up to 16.4%, and the fluctuation of the
green output power was better than 2.5% in the given 30 min.

DOI: 10.1134/S1054660X12020144

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