Abstract

Polarization-dependent optical properties in GaAs/AlGaAs quantum wells and superlattices have received considerable interests to find a new design policy for polarization-sensitive optical devices.^1-4 However, polarization phenomena behind these highly uniaxially anisotropic materials have not been well investigated, especially in superlattices where a coupling between wells plays an important role. In this paper, we present experimental investigations on polarization-dependent luminescences with the electric field polarized parallel (e_//) and perpendicular (e_⊥) to the quantization z-axis for a set of high quality short-period GaAs/AlAs superlattices (SPS) by photoluminescence (PL) at 4-300K, supplemented with photocurrent (PC) spectroscopy.

© 1988 Optical Society of America