We report an all-solid-state intracavity Raman laser with intracavity nonlinear sum-frequency generation providing visible output wavelengths selected from second harmonics and sum frequencies of the fundamental and Stokes fields. The laser comprises a diode end-pumped Nd:YAG laser, an acousto-optic Q switch, a KGd(WO_4)_2 Raman crystal, and a lithium borate nonlinear converter in a resonator designed to accommodate dynamic thermal lensing. For 20 W of pump power, output powers up to 1.8 W are demonstrated at wavelengths of 532, 555, 579, and 606 nm, selectable by angle and temperature tuning of the nonlinear medium.
© 2005 Optical Society of America
Richard P. Mildren, Helen M. Pask, Hamish Ogilvy, and James A. Piper, "Discretely tunable, all-solid-state laser in the green, yellow, and red," Opt. Lett. 30, 1500-1502 (2005)