title: Numerical simulation of 30-kW class liquid-cooled Nd:YAG multi-slab resonator.
abstract: A numerical modeling is developed for 30-kW class liquid-convection-cooled elastically-mounted Nd:YAG multi-slab laser resonator configuration. The modeling exhibits the thermal effects and resultant wavefront aberration of the gain module under flow cooling and CW pumping at 100-kW level, the self-reproducing oscillating mode within the large-aperture cavity, as well as the beam quality enhancement by adaptive optics. The simulation results predict a CW output power of 31 kW with the optical-optical efficiency of 26.1% obtained from a modified resonator configuration with dual gain modules that have opposite flow directions, while the beam quality can be improved to β<2 after the correction of a deformable mirror.
authors.forename: Xing
authors.initials: X
authors.lastname: Fu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liu
authors.forename: Peilin
authors.initials: P
authors.lastname: Li
authors.forename: Lei
authors.initials: L
authors.lastname: Huang
authors.forename: Mali
authors.initials: M
authors.lastname: Gong