All-Solid-State CW Nd:GdVO₄-LBO Red Laser
under Direct 912 nm Pumping¹

X. Yang^a, *, L. Song^a, and Y. H. Zhang^b

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

^b Changchun UP Optotech Co., Ltd. Changchun 130031, China

*e-mail: custyangxu@163.com

Received November 26, 2011; in final form, November 27, 2011; published online April 3, 2012

Abstract—We report a red laser at 670.5 nm generation by intracavity frequency doubling of a continuous
wave (CW) laser operation of a 1341 nm Nd:GdVO₄ laser under in-band diode pumping at 912 nm. An LBO
crystal, cut for critical type I phase matching is used for second harmonic generation of the laser. At an incident
pump power of 8.9 W, as high as 347 mW of CW output power at 670.5 nm is achieved. The fluctuation of the
red output power was better than 3.7% in the given 30 min, and the beam quality factor M² is 1.65.

DOI: 10.1134/S1054660X12050301

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