Deconvolution of Photoluminescence Spectra of Al sub x GA sub 1-x as Grown by MBE (Molecular Beam Epitaxy).

Abstract

This study investigated the feasibility of applying the spectral analysis algorithm referred to as the Maximum Entropy Method to photoluminescence spectra from AlGaAs samples. Two GaAs and ten AlGaAs samples were analyzed. The Maximum Entropy Method, implemented in a routine called CRUNCH, which was developed at the Jet Propulsion Lab, employs an autoregressive model to remove the noise from the high frequency terms of the discrete fourier transform of the spectra. Standard fourier deconvolution techniques are then applied to resolve the peaks of the spectrum. The results of this study indicate that the Maximum Entropy Method is a useful tool in resolving the peaks of a photoluminescence spectrum.

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1986
Accession Number
ADA172377

Entities

People

  • Richard A. Holcomb

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Algorithms
  • Discrete Fourier Transforms
  • Epitaxial Growth
  • Frequency
  • Jet Propulsion
  • Molecular Beam Epitaxy
  • Molecular Beams
  • Photoluminescence
  • Spectra
  • Standards

Fields of Study

  • Materials science

Readers

  • Radar Systems Engineering.
  • Semiconductor Device Technology
  • Statistical inference.