Open AccessINTERSUBBAND ABSORPTION IN p-TYPE GexSi1-x/Si MULTIPLE QUANTUM WELLS AND ITS ANALYSIS
Author(s) -
Yu Min-Feng,
Yang Yu,
Wei Shen,
Haoxiang Zhu,
Dunwei Gong,
Sheng Chi,
Xun Wang
Publication year - 1997
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.46.740
Subject(s) - quantum well , type (biology) , absorption (acoustics) , materials science , optoelectronics , physics , optics , laser , geology , paleontology
A theoretical and experimental study of intersubband absorption in p-type GexSi1-x/Si multiple quantum wells are presented,the calculations are performed with envelop-function approach,with full inclusion of the degeneracy and warping of the three topmost bulk valence bands described by the strain-dependent Luttinger-Kohn Hamiltonian.The Hartree potential and the exchange correlation interaction are taken into account in a self-consistent manner.And finally the absorption spectra is calculated.We contribute some absoptions observed with normal incident unpolarized infra-beam to the band-mixing of heavy,light and split-off bands in GexSi1-x/Si quantum wells.