CW Green Laser at 520 nm Based on Sum-Frequency Mixing
of Diode Pumped Yb:YAG Laser¹

X. Y. Mi

School of Material and Chemical Industry, Changchun University of Science and Technology,
Changchun 130022, China

e-mail: mixiaoyun_cust@163.com

Received June 29, 2011; in final form, July 2, 2011; published online October 24, 2011

Abstract—We report for the first time a continuous-wave (CW) green laser emission by sum-frequency mixing
in Yb:YAG crystal. Using type-I critical phase-matching LBO crystal, a green laser at 520 nm is obtained by
1030 and 1048 nm intracavity sum-frequency mixing. The maximum laser output power of 269 mW is obtained
when an incident pump laser of 17.8 W is used. At the output power level of 269 mW, the output stability is
better than 3.2%.

10.1134/S1054660X11230137

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