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-mm radiation was generated by externally resonant second-harmonic generation in a monolithic MgO:LiNbO3 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%.
© 1987 Optical Society of America
Original Manuscript: June 19, 1987
Manuscript Accepted: September 8, 1987
Published: December 1, 1987
W. J. Kozlovsky, C. D. Nabors, and R. L. Byer, "Second-harmonic generation of a continuous-wave diode-pumped Nd:YAG laser using an externally resonant cavity," Opt. Lett. 12, 1014-1016 (1987)