Theory of two-photon electroabsorption by excitons
- 15 November 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 18 (10) , 5499-5501
- https://doi.org/10.1103/physrevb.18.5499
Abstract
It is shown that direct-gap covalent semiconductors, such as GaAs, should exhibit electric-field-induced Franz-Keldysh-like structures in their two-photon absorption spectra. These structures are evaluated employing exciton theory; the resulting line shapes are shown to be proportional to the line shapes for one-photon "forbidden" transitions, a property that greatly facilitates computations of the two-photon absorption.Keywords
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