Research and Optimization Design of Train Laser Headlight Thermal Management Based on COMSOL Simulation Technology

The use of laser technology in high-speed train headlight systems effectively addresses the problems of insufficient brightness, short life and high energy consumption associated with traditional halogen lamps. Laser headlights offer higher brightness, longer life and lower energy consumption, significantly improving the safety of trains operating at night. However, the waste heat generated by laser diodes can lead to temperature increases, which can affect beam quality and output power, and even cause damage to the laser medium. Therefore, thermal management of laser diodes becomes a critical issue. This paper uses COMSOL simulation to optimize the thermal management of laser headlights to control operating temperatures, suppress thermal lensing effects, and ensure the safety and efficiency of high-speed trains during nighttime operation.