Accession Number : ADA193336

Title :   Laser Spectroscopy of Quantum Well and Superlattice Structures.

Descriptive Note : Interim rept. no. 1, 3 Dec 87-2 Feb 88,

Corporate Author : STRATHCLYDE UNIV GLASGOW (UNITED KINGDOM)

Personal Author(s) : Henderson, B

PDF Url : ADA193336

Report Date : 15 Feb 1988

Pagination or Media Count : 15

Abstract : The research described in this report aims to understand the effects of disorder on the lineshapes of exciton luminescence in quantum well (QW) materials. The low temperature photoluminescence (PL) and photoluminescence excitation (PLE) spectra of the excitonic transition in QW material are a sensitive test of interfacial quality. Contributions to the linewidth arise from homogeneous (lifetime) and inhomogeneous (disorder) effects. In a typical 50 A well in GaAs, a linewidth at low temperatures of a few meV compares to a typical linewidth about one hundred times smaller in bulk material.

Descriptors :   *CRYSTAL LATTICES, *QUANTUM THEORY, BULK MATERIALS, EXCITATION, EXCITONS, INTERFACES, LASERS, LOW TEMPERATURE, LUMINESCENCE, PHOTOLUMINESCENCE, QUALITY, SENSITIVITY, SPECTROSCOPY, STRUCTURES, TRANSITIONS

Subject Categories : Physical Chemistry
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE