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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1038nm,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2.19~9.27ps,峰值功率变化范围为76~308mW,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。
A two-stage passive mode-locked laser structure is adopted, and two groups of quantum well active regions are cascaded with the tunnel junction to realize a single-mode integrated high-power quantum well passive mode-locked laser operating in the near infrared band. The mode-locking properties of the mode-locked laser were characterized. The working center wavelength of the mode-locked laser was 1038 nm and the laser pulse repetition frequency was 24.37 GHz. The operating conditions of the laser were changed. The pulse width varied from 2.19 to 9.27 ps , Peak power range of 76 ~ 308mW, indicating that the mode-locked laser with monolithic integration, small size, high power, high repetition frequency and excellent features. At the same time, under certain reverse bias conditions, the mode-locked laser exhibits power bistability and enlarges the effective clamping range.