Optimized thermal management in 976 nm photonic crystal laser diodes

【摘要】 Photonic crystal [PC) laser diodes [LDs) exhibit high power and narrow divergence angle output. Enhancing their thermal characteristics is critical for improving device performance and reliability. In this study, we develop a 3D heat dissipation model for 976 nm PC LDs packaged in conduction-cooled heat sink mounts [CS-mounts). The steady-state thermal characteristics are simulated using the finite element method [FEM) to optimize heat sink dimensions and transition heat sink design. Through optimization, the heat sink volume is reduced by 83.3%, while heat dissipation efficiency is improved by18.2%. Under 60 A continuous-wave operation, the PC LD with the optimized heat dissipation structure achieves an output power of 48.2 W at 20°C with the thermal resistance of 1.17 K/W, and an output power of 54.5 W at 5°C with the maximum power conversion efficiency of 62.4%.更多还原

【Abstract】 Photonic crystal [PC) laser diodes [LDs) exhibit high power and narrow divergence angle output. Enhancing their thermal characteristics is critical for improving device performance and reliability. In this study, we develop a 3D heat dissipation model for 976 nm PC LDs packaged in conduction-cooled heat sink mounts [CS-mounts). The steady-state thermal characteristics are simulated using the finite element method [FEM) to optimize heat sink dimensions and transition heat sink design. Through optimization, the heat sink volume is reduced by 83.3%, while heat dissipation efficiency is improved by18.2%. Under 60 A continuous-wave operation, the PC LD with the optimized heat dissipation structure achieves an output power of 48.2 W at 20°C with the thermal resistance of 1.17 K/W, and an output power of 54.5 W at 5°C with the maximum power conversion efficiency of 62.4%.更多还原