Abstract
We report a continuous-wave, watt-level, red, green, and blue (RGB) laser pumped by a multi-longitudinal-mode Yb-fiber laser at 1064 nm. A singly resonant optical parametric oscillator at 1.56 μm has two intracavity sum-frequency generators for red and blue laser generation. An extracavity second harmonic generator converts the residual pump power into green laser radiation. At 25-W pump power, the laser generated 3.9, 0.46, and 0.49 W at 633, 532, and 450 nm, respectively. By replacing the multi-mode pump laser with a single-frequency one, we further increased the output power of the green laser to 2 W. © 2011 SPIE.