A design of diode-pumped Nd:YAG laser with a single crystal that generates simultaneous laser action at the wavelengths of 1 064 nm and 1 319 nm was presented and continuous-wave (CW) of 588.9 nm was obtained for the first time by use of type-Ⅰ critical phase-matching LBO crystal intracavity sum-frequency mixing.The maximum output power of 62 mW is achieved with an incident pump power of 1.8 W.The optical-to-optical conversion efficiency is up to 3.4%,and the power instability in 24 h is better than ±2.7%.
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