title: Generation of high-power blue light in periodically poled LiNbO(3).
abstract: We report the generation of 450-mW average blue (473-nm) power by frequency doubling of a diode-pumped 946-nm Nd:YAG laser. We achieved pulsed operation at a high repetition rate (~160kHz) by driving the relaxation oscillations of the laser. A 40% conversion efficiency to the second harmonic was obtained in a single-pass, extracavity, first-order, quasi-phase-matched process in which periodically poled lithium niobate (period 4.5microm , thickness 0.5mm , and length 15mm) at 140 degrees C was used. The resulting high-power blue beam was circular in profile and nearly diffraction limited, indicating that photorefractive effects do not appear to limit device performance.
authors: G W
authors: GW
authors: Ross
authors: M
authors: M
authors: Pollnau
authors: P G
authors: PG
authors: Smith
authors: W A
authors: WA
authors: Clarkson
authors: P E
authors: PE
authors: Britton
authors: D C
authors: DC
authors: Hanna