We have demonstrated a monolithic semiconductor passively mode-locked Bragg waveguide laser (PMBRL) based on a two quantum well active region. The lasers showed a threshold current of ~33 mA at a saturable absorber reverse bias of 0 V in continuous wave operation (CW), with emission wavelength of ~785 nm. A systematic study of a two section PMBRLs showed that these devices can generate pulse widths down to 211 fs at a 64 GHz repetition rate with a time-bandwidth product of 0.32. This range of pulse widths sets a new record for quantum well based devices.

中文翻译：

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具有 64 GHz sub-300 fs 脉冲、785 nm 的被动锁模布拉格激光器

我们已经展示了一种基于双量子阱有源区的单片半导体被动锁模布拉格波导激光器 (PMBRL)。在连续波操作 (CW) 中，激光器在 0 V 的可饱和吸收体反向偏压下显示出 ~33 mA 的阈值电流，发射波长为 ~785 nm。对两段 PMBRL 的系统研究表明，这些设备可以在 64 GHz 重复频率下以 0.32 的时间带宽积产生低至 211 fs 的脉冲宽度。这个脉冲宽度范围为基于量子阱的设备创造了新记录。