Abstract
We have examined the contribution of a linear k term in the Luttinger Hamiltonian to electroabsorption of strained quantum wells. We have solved the 4/spl times/4 effective mass equation for the two lowest valence subbands and an appropriate set of differential equations for excitons. For bound excitons, our results indicate that the hh1/spl rarr/c1 transition is not forbidden for z-polarized electromagnetic waves, that the absorption spectrum can be independent of polarization, and that the hh1 and lh1 absorption edges, contrary to recent suggestion, cannot merge.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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