We report the generation of 24-W green power, which, to our knowledge, is the highest level of green power achieved in cw modes. Intracavity frequency doubling of a simple Nd:YAG laser was performed with a 15-mm KTiOPO4 crystal. The green power was stable, and the highest level of green power achievable was limited only by the maximum lamp input power. We obtained a similar level of green power by replacing the single 15-mm KTiOPO4 crystal by a phase-unified multinonlinear crystal combination consisting of a 5-mm and a 10-mm KTiOPO4 crystal.
© 1994 Optical Society of America
Original Manuscript: November 12, 1993
Published: May 15, 1994
Tetsuo Kojima and Koji Yasui, "High-power green-beam generation in continuous-wave modes by use of long KTiOPO4 crystals with a Nd:YAG laser," Opt. Lett. 19, 713-715 (1994)