551 nm Generation by Sum-Frequency Mixing
of Intracavity Pumped Nd:YAG Laser¹

Y. Dong*, S. T. Li, and X. H. Zhang

School of Science, Changchun University of Sciences and Technology, Changchun 130022, China

*e-mail: dongyuan_cust@163.com

Received September 4, 2011; published online December 28, 2011

Abstract—We present for the first time a Nd:YAG laser emitting at 1319 nm intracavity pumped by a 946 nm
diode-pumped Nd:YAG laser. A 809 nm laser diode is used to pump the first Nd:YAG crystal emitting at
946nm, and the second Nd:YAG laser emitting at 1319 nm intracavity pumped at 946 nm. Intracavity sum-
frequency mixing at 946 and 1319 nm was then realized in a LBO crystal to reach the yellow range. We obtained
a continuous-wave output power of 158 mW at 551 nm with a pump laser diode emitting 18.7 W at 809 nm.

10.1134/S1054660X12020089

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