High-Temperature Reliability of Aluminium-free 980 nm and 808 nm Laser diodes

We demonstrate the high-temperature reliability characteristics of uncoated Al-free 980 and 808 nm lasers. Excellent laser characteristics (T_o , J_th and η_d ). low thermal dissipation (close to the theoretical limit), and low free-carrier loss in the InGaP layers have been measured. We report high power laser arrays (up to 70 W). lasers operating at high-temperatures (100 °C), and lifetime results for Al-free lasers operating over 3000 hours without degradation of the uncoated mirrors.