采用两段式被动锁模激光器结构, 利用隧道结级联两组量子阱有源区, 实现了一种工作在近红外波段的单片集成大功率量子阱被动锁模激光器。对该锁模激光器的锁模特性进行了表征, 测试得到该锁锁模激光器工作中心波长为1038 nm, 激光脉冲重复频率为24.37 GHz, 改变激光器的工作条件, 其脉冲宽度变化范围为2.19~9.27 ps, 峰值功率变化范围为76~308 mW, 表明该锁模激光器具有单片集成、体积小、功率大、重复频率高等优良特性。同时, 在一定的反向偏压条件下, 该锁模激光器呈现出功率双稳态的特性, 扩大了有效锁模范围。

Utilizing two section passive mode-locked laser structure, a monolithic high-power quantum well passive mode-locked laser operating in the near-infrared band is realized by cascading two quantum well active regions by the tunnel junction. The mode-locked characteristics of the model-locked laser are measured. The results show that the center wavelength of this laser is 1038 nm, the pulse repetition frequency is 24.37 GHz, and when the working condition of lasers changes, the pulse width varies from 2.19 ps to 9.27 ps. The peak power variation range is from 76 mW to 308 mW. It shows that the mode-locked laser has the advantages of monolithic integration, compact size, high power and high repetition frequency. Meanwhile, under certain reverse bias conditions, the mode-locked laser exhibits the characteristics of power bistability and enlarges the effective mode-locking range.