TY - JOUR
AU - Yang, Fengtu
AB - We adopt a flat-concave resonant cavity structure, and the laser propagates along the Zigzag optical path in the slab. In order to effectively reduce the thermal lens effect in the thickness direction of the slab crystal and reduce the local thermal effect at the pump region, we propose a module structure under the mixed cooling mode. The large surface under the slab is welded in the microchannel cooling heat sink, and the large surface on the module is cooled by strong convection, so that the crystal surface is evenly cooled, and the thermal distortion in the thickness direction of the slab crystal is suppressed. On the other hand, We use the fast axis collimated semiconductor laser stack as the pump source, and the pump light is coupled to the slab to achieve a uniform distribution of the pump intensity, which is through the optical waveguide and the aspheric lens. When the pump power is 9500W, the average output power is 4.352kW, and the corresponding optical-to-optical conversion efficiency is 45.8%. The repetition rate is 400Hz, the laser pulse width is 180s, and the single pulse energy is 10.88J. The laser beam x is 3.4 times of the diffraction limit, and y is 1.5 times of the diffraction limit.
TI - High power and high beam quality quasi-continuous-wave pumped slab laser
JF - Proceedings of SPIE
DO - 10.1117/12.3016534
DA - 2023-12-22
UR - https://www.deepdyve.com/lp/spie/high-power-and-high-beam-quality-quasi-continuous-wave-pumped-slab-j4Rk81UeAK
SP - 129740T
EP - 129740T-7
VL - 12974
IS - 
DP - DeepDyve
ER -