Loss and index change in GaInAsP/InP multiple quantum well QCSE tuning element for surface emitting lasers

Abstract

The authors investigated some fundamental characteristics of chemical beam epitaxy (CBE) grown GaInAsP/InP multiple quantum wells (MQWs) for a wavelength tuner and estimated the wavelength shift for realizing wavelength tunable surface emitting (SE) lasers. They observed the quantum confined Stark effect in a GaInAsP/InP MQW structure grown by CBE and estimated the refractive index change, which was as large as 1%. By using these results, the possibility realizing a wavelength tunable SE laser with a MQW tuner is exhibited and the maximum wavelength change is expected to be as large as 7/spl Aring/.<>