Effects of spatial dispersion and damping on exciton absorption
- 15 December 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 34 (12) , 8258-8263
- https://doi.org/10.1103/physrevb.34.8258
Abstract
Exciton absorption is studied in the spatially dispersive case. The energy-propagation properties of the medium are used to define the absorption coefficient. The interplay of dispersion and damping in determining the absorption coefficient is discussed and a critical value of the damping above which the dispersion effects disappear is derived analytically. Furthermore, the dependence of the spectral and of the integrated absorption coefficient on the auxiliary boundary condition is discussed.Keywords
This publication has 15 references indexed in Scilit:
- Reflectivity of a nonlocal dielectric with an excitonic surface potentialPhysical Review B, 1984
- Properties of Exciton Polaritons Studied in a One‐Dimensional ModelPhysica Status Solidi (b), 1982
- Wannier-Mott excitons in semi-infinite crystals: Wave functions and normal-incidence reflectivityPhysical Review B, 1982
- Model of the Excitonic Surface Layer in Normal Incidence ReflectionPhysica Status Solidi (b), 1981
- Polariton structure of interband transitions in semiconductorsPhysica Status Solidi (b), 1979
- Aspects of spatial dispersion in the optical properties of a vacuum-dielectric interfacePhysical Review B, 1976
- Spatial Dispersion Effects in Resonant Polariton Scattering. I. Additional Boundary Conditions for Polarization FieldsPhysical Review B, 1972
- Structure of the Electromagnetic Field in a Spatially Dispersive MediumPhysical Review Letters, 1971
- Theoretical and Experimental Effects of Spatial Dispersion on the Optical Properties of CrystalsPhysical Review B, 1963
- Theory of the Contribution of Excitons to the Complex Dielectric Constant of CrystalsPhysical Review B, 1958