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Proceedings Paper

Light Scattering By Superlattice Acoustic Modes At Critical Points Of The Brillouin Zone
Author(s): J. He; J. Sapriel; R. Azoulay; G. Le Roux; H. Brugger
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Paper Abstract

A combined Brillouin-Raman study has been performed in Si-Si1-xGex and GaAs-Al As superlattices. The photoelastic constant of Si0.5Ge0.5 with respect to Si for several light wavelengths is measured for the first time by light scattering experiments. The frequencies, linewidths and relative intensities of the superlattice acoustic phonon modes are carefully investigated, especially for scattering wavevectors in the vicinity of Brillouin zone boundaries. The acoustic and optical absorptions are found to have particular effects on the frequencies and relative intensities for scattering wavevectors in these regions.

Paper Details

Date Published: 18 August 1988
PDF: 6 pages
Proc. SPIE 0943, Quantum Well and Superlattice Physics II, (18 August 1988); doi: 10.1117/12.947315
Show Author Affiliations
J. He, Centre National d'Etudes des Telecommunications (France)
J. Sapriel, Centre National d'Etudes des Telecommunications (France)
R. Azoulay, Centre National d'Etudes des Telecommunications (France)
G. Le Roux, Centre National d'Etudes des Telecommunications (France)
H. Brugger, Technische Universitat Munchen (Germany)


Published in SPIE Proceedings Vol. 0943:
Quantum Well and Superlattice Physics II
Federico Capasso; Gottfried H. Doehler; Joel N. Schulman, Editor(s)

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