Abstract

We have investigated the light emission spectra and current light characteristics of GaAs/AlGaAs graded index separate confinement heterostructure single quantum well lasers (GRINSCH SQW) with a monolithic intracavity loss modulator in various geometries. Utilizing the quantum confined Stark effect¹ in the absorber region and band gap shrinkage in the gain section,² it is shown that the emitted light intensity of GRINSCH SQW lasers (quantum well width L = 100 Å) can be modulated efficiently with reverse bias voltage of the absorber. In suitable scaled stripe geometries with L_A/L_C < 1/20, where L_A is the length of the absorber and L_C is the length of the cavity, we observe current light characteristics without hysteresis loops.

© 1989 Optical Society of America