Chinese Optics Letters, 2017, 15 (12): 120801, Published Online: Jul. 18, 2018
High power generation of adaptive laser beams in a Nd:YVO4 MOPA system
080.4865 Optical vortices 140.0140 Lasers and laser optics 140.3280 Laser amplifiers 140.3300 Laser beam shaping 140.3410 Laser resonators
Abstract
We report efficient power scaling of the laser output with an adaptive beam profile from an Nd:YAG dual-cavity master oscillator using a three-stage end-pumped Nd : YVO 4 amplifier. We succeed in the fast switching of an excited laser mode by modulating an acousto-optic modulator loss in a dual-cavity master oscillator, thereby achieving temporal modulation of the output beam profile. The outputs from the master oscillator are amplified via a three-stage power amplifier yielding 36.6, 40.5, and 45.4 W of the maximum output at 116.8 W of incident pump power for the transverse electromagnetic, Laguerre–Gaussian, and quasi-top-hat beam, respectively. The prospects for further power scaling and applications via the dual-cavity master-oscillator power-amplifier (MOPA) system are considered.
S. H. Noh, D. J. Kim, J. W. Kim. High power generation of adaptive laser beams in a Nd:YVO4 MOPA system[J]. Chinese Optics Letters, 2017, 15(12): 120801.