Optical Properties of (100) - and (111)-Oriented GaInAs/GaAs Strained-Layer Superlattices

B. K. Laurich; K. Elcess; C. G. Fonstad; J. G. Beery; C. Mailhiot; D. L. Smith

doi:10.1103/PhysRevLett.62.649

Optical Properties of (100) - and (111)-Oriented GaInAs/GaAs Strained-Layer Superlattices

B. K. Laurich, K. Elcess, C. G. Fonstad, J. G. Beery, C. Mailhiot, and D. L. Smith

Phys. Rev. Lett. 62, 649 – Published 6 February 1989

Abstract

We have studied the optical properties of GaInAs/GaAs strained-layer superlattices grown along the [100] and [111] crystallographic axes. Absorption and luminescence spectra for the two superlattices show qualitatively different behavior. These differences are attributed to the presence of straingenerated electric fields in the (111) strained-layer superlattice, which have been predicted theoretically but have not been previously observed experimentally.