Abstract:
Thermal parameters of cw laser diode bars (LDBs) have been studied experimentally and using 3D simulation in order to identify factors limiting their output power and operational life. Using a thermal camera, we have obtained thermal field images of 47-cluster LDBs with an aperture fill factor of 50%, packaged in a heat spreader of the C–S mount type. Distributions of the output power and emission spectrum of the emitting clusters have been measured by a probing method. The simulation results and experimental data have been analysed, compared and discussed.