We demonstrate an efficient Nd:YAG laser end pumped by a high-power (135-W peak power) three-bar diode-laser array. We have achieved an unpolarized TEM00-mode output energy of 6.7 mJ/pulse for a 27-mJ pump pulse. The optical-to-optical slope efficiency of the energy impinging upon the laser rod is 38% for round-trip losses of 2.4% and a 5% transmissive output coupler. The attainable multimode output energy is 8.4 mJ/pulse. We have also designed and constructed an optics module that efficiently concentrates the pumping radiation in the resonator mode region. This optics is a key component for this laser.
© 1992 Optical Society of America
Original Manuscript: March 4, 1992
Published: July 15, 1992
Horacio R. Verdún and Ti Chuang, "Efficient TEM00-mode operation of a Nd:YAG laser end pumped by a three-bar high-power diode-laser array," Opt. Lett. 17, 1000-1002 (1992)