A new design of a 5 kW high power laser with a double slab configuration
摘要
In this paper, we present a simulation, analysis, and optimization of a novel 5-kilowatt high-power laser employing a double-slab configuration. Simulation results indicate that the double-slab geometry is a promising approach for scaling solid-state Nd:YAG lasers to the kilowatt power range. A predicted output power of 5.6 kW with an optical-to-optical conversion efficiency of approximately 31% was achieved through a new double-slab gain media configuration, optimized to dimensions of 200 mm × 15 mm × 3 mm and cooled by three unidirectional flows. Employing suitable ray-tracing software, a near-unity fill factor was also predicted. Simulations further confirm that opposite directional cooling flow results in a temperature distribution approximately 10 °C lower in the optically pumped slabs compared to unidirectional cooling. An optimized cavity design yields a suitable temperature of 118 °C and thermal stress distributions demonstrating that the laser gain medium operates safely with minimal tensile stress, approximately 110 MPa.