LD泵浦准连续Nd:YAG/KTP 12W红光激光器

A high power LD-pumped Nd:YAG/KTP Q-CW red laser was presented. Using a KTP crystal (type Ⅱ phase-matching, θ=59.9°, ф=0°), the red beam was obtained by intracavity frequency-doubling the output wavelengths of Nd:YAG near 1.3µm. The LD pump module used in this experiment is home-made, comprised a, ф5 mm×125 mm Nd:YAG rod side-pumped by thirty 20 W LDs of a triangle radial geometry. For obtaining high power SHG output, we employed a V-folded laser cavity and a acousto-optic Q switch. The highest power of 12 W of Q-CW red laser was obtained with a 470 W pumping power of LD. The curve of power and spectrum of red beam were given in the paper.