A 10-W laser-diode bar, a multistripe monolithic laser-diode array, has been used to end pump Nd:YAG. Twelve beams emitted from 12 stripes, spaced 800 μm apart, of a 1-cm linear diode array were collimated with a multiprism array consisting of 14 prismlets with 800-μm width to pump the Nd:YAG facet. The maximum Nd:YAG cw output power at 1064 nm of 3 W was obtained at 10-W laser-diode-bar power with a slope efficiency of 35%, and a TEM00 spatial mode with values of beam-quality factor M2 of 1.29 and 1.76 in the planes perpendicular and parallel to the junction, respectively. A pulse width of 25.2 ns (1-kHz repetition) was obtained in acousto-optic Q-switched operation.
© 1996 Optical Society of America
Original Manuscript: October 2, 1995
Published: March 20, 1996
Satoshi Yamaguchi, Tetsuro Kobayashi, Yoshimasa Saito, and Koichi Chiba, "Efficient Nd:YAG laser end pumped by a high-power multistripe laser-diode bar with multiprism array coupling," Appl. Opt. 35, 1430-1435 (1996)