Efficient generation of a three-primary-color laser from the second-harmonic emission of a Nd:YAG laser

摘要

Laser emission, consisting of three primary colors, is generated by frequency conversions of the second-harmonic emission of a picosecond (120 ps) Nd:YAG laser by means of stimulated Raman scattering and subsequent four-wave Raman mixing in molecular deuterium. In the double-pass configuration, the fundamental beam (532 nm, 14.16 mJ, 100percent) is converted to blue (459 nm, 1.71 mJ, 12.1percent), green (532 nm, 7.04 mJ, 49.7percent), and red (632 nm, 4.90 mJ, 34.6percent), resulting in a total conversion efficiency of 96.4percent.