CONTINUOUS-WAVE, ALL-SOLID-STATE, SINGLE-FREQUENCY 400-MW SOURCE AT 589 NM BASED ON DOUBLY RESONANT SUM-FREQUENCY MIXING IN A MONOLITHIC LITHIUM-NIOBATE RESONATOR

Sum-frequency mixing of two cw single-mode Nd:YAG lasers in a doubly r esonant congruent lithium niobate resonator generated two TEM00 beams of single-frequency 589-nm radiation. The primary beam had a power of 400 mW and the secondary beam of approximately 15 mW by use of 320 mW of 1319-nm and 660 mW of 1064-nm Nd:YAG radiation incident on the lith ium niobate resonator. This corresponds to an optical power conversion efficiency of more than 40%. (C) 1998 Optical Society of America.