We report the first observation to our knowledge of coherent emission at 473 nm from an intracavity-doubled Nd:YAG microlaser. The d32 coefficient of potassium niobate was used in a 90-deg, temperature-tuned, Type I phase-matching configuration to generate the second harmonic of the 946-nm intracavity field. Output powers in excess of 5 mW at optical conversion efficiencies of approximately 2% have been observed with dye-laser pumping at 588 nm.
© 1988 Optical Society of America
G. J. Dixon, Z. M. Zhang, R. S. F. Chang, and N. Djeu, "Efficient blue emission from an intracavity-doubled 946-nm Nd:YAG laser," Opt. Lett. 13, 137-139 (1988)