High powers and subpicosecond pulses from an externalhyphen;cavity surfacehyphen;emitting InGaAs/InP multiple quantum well laser

摘要

We demonstrate that surface‐emitting lasers operating in an external cavity can produce high average powers, high peak powers, and ultrashort pulses. By optical pumping of InGaAs/InP multiple quantum well samples in an external cavity, we generated 190 mW both in continuous and mode‐locked operation at 1.5 &mgr;m. Synchronous pumping at 100 MHz yielded 7.7 ps pulses with 15 mW average power. These were shortened to 1. 1 ps pulses with 64 W peak power by chirp compensation using diffraction gratings, and to 710 fs by negative group‐velocity dispersion in an optical fiber.