Effective Laser Diode Heat Dissipation requires an optimized thermal path from the junction to the external environment. Each interface introduces thermal resistance. The high-power laser diode (HPLD) has witnessed increasing application in space, as the aerospace industry is developing rapidly. To cope with the space environment, optimizing the heat-dissipation structure and improving the heat-dissipation ability via heat conduction have become key to. Abstract— By measuring the total energy flow from an optical device, we can develop new design strategies for thermal stabiliza-tion. These cooling methods are significant to make laser diode in compact size, light weight with. Laser Diode Thermal Management describes the controlled removal of heat generated during laser operation.