Modeling AlxGa1-xAs optical constants as functions of composition

Paul G. Snyder, John A. Woollam, Samuel A. Alterovitz, Blaine Johs

Research output: Contribution to journalArticlepeer-review

98 Scopus citations


Three models for the dielectric function εx(hν) of AlxGa1-xAs are reviewed. All are based on measured optical constants at discrete compositions. The validity of each model near critical point energies, and otherwise, is evaluated. Only the energy-shift model is appropriate over the entire available spectrum (1.5-6.0 eV), including the band-gap (E0) region.

Original languageEnglish (US)
Pages (from-to)5925-5926
Number of pages2
JournalJournal of Applied Physics
Issue number11
StatePublished - 1990
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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