理论分析了工作温度对大功率激光二极管的工作波长、电光效率和器件寿命等的影响, 采用波长补偿、高特征温度无铝材料设计外延和一体化烧焊等技术, 设计制作了808 nm准连续波(QCW)高温激光器阵列。在热沉温度70 ℃的工作条件下, 80 A单条输出功率大于65 W, 20 ℃～70 ℃范围内特征温度T0达到145 K。10叠层阵列电光效率达到53%, 工作寿命大于109次脉冲。

Based on the theoretical analysis for the influence of operating temperature on the operating wavelength electro-optical conversion efficiency and lifetime of the device, the high-power 808 nm quasi-continuous wave (QCW) laser diode array was fabricated with the technology of wavelength compensating, Al-free active region epitaxial material with high characteristic temperature and integrative soldering. When the heat sink temperature was 70 ℃, a CW output power of 65 W of a single bar was achieved at a driving current of 80 A. A characteristic temperature of a single bar in the range of 20 ℃～70 ℃ was estimated to be about 145 K. Under quasi-continuous wave (2% duty factor) operation condition, the laser diode array stacked with 10 bars achieved an electro-optical conversion efficiency of 53%, and a lifetime in excess of 109 shots.