Transform-Limited Picosecond Optical Pulses From A Mode-Locked Ingaas/Algaas Qw Laser With Integrated Passive Waveguide Cavity And Qw Modulator

Abstract

Using a novel single-step molecular beam epitaxy growth technology on nonplanar substrates, we report on the successful integration of an InGaAs / AlGaAs laser amplifier with a 4-mm-long passive waveguide cavity and a QW modula-tor. Lasing action of the entire structure was achieved by a current of 60 mA flowing through the amplifier section. Mode-locking experiments applying an RF signal to the modulator segment led to nearly transform-limited pulses with a duration of 4.4 ps and a time-bandwidth product of 0.43. © 1993 IEEE.