Efficient Blue Emission of Ytterbium-Doped Sr₅(PO₄)₃F
under Quasi-Three-Level Intracavity Pumping¹

Y. Yang^{a, b,} * and G. H. Cao^a

^a Changchun University of Science and Technology, Changchun 130022, Jilin China

^b Northern Institute of Materials Engineering and Science, Changchun 130012, Jilin China

*e-mail: yangyu_1983@163.com

Received September 5, 2011; in final form, September 6, 2011; published online December 28, 2011

Abstract—We report an Yb:Sr₅(PO₄)₃F (Yb:S–FAP) laser emitting at 985 nm intracavity pumped by a 912nm
diode-pumped Nd:GdVO₄ laser. A 808 nm diode laser is used to pump the Nd:GdVO₄ crystal emitting at 912
nm, and the Yb:S–FAP laser emitting at 985 nm intracavity pumped at 912 nm. With incident pump power of
17.5 W, intracavity second harmonic generation has been demonstrated with a power of 131mW at 492.5 nm
by using a LBO nonlinear crystal.

DOI: 10.1134/S1054660X12020211

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