Second-Harmonic Generation of a Continuous-Wave Diode-Pumped Nd:YAG Laser Using an Externally Resonant Cavity

摘要

We report 13% second-harmonic conversion efficiency of a 15-mW, cw, diode laser-pumped Nd: YAG oscillator. 2 mW of single-axial-mode 532-nm radiation was generated by externally resonant second-harmonic generation in a monolithic MgO-doped lithium niobate nonlinear crystal cavity. The measured finesse of 450 for the monolithic external cavity indicated that absorption and scatter losses in the doubler were less than 0.8%.