Polariton Dispersion Law in Periodic Bragg and Near-Bragg Multiple Quantum Well Structures

Details Polariton Dispersion Law in Periodic Bragg and Near-Bragg Multiple Quantum Well Structures Polariton Dispersion Law in Periodic Bragg and Near-Bragg Multiple Quantum Well Structures

2000-03-03

arxiv.org/abs/cond-mat/0003054v2

to be published in Phys. Rev. B, v. 62, issue 7, 2000

Physics

Condensed Matter

Disordered Systems and Neural Networks

replaced with a new version, an error in one of the equations is corrected

Scientific paper

10.1103/PhysRevB.62.4242

The structure of polariton spectrum is analyzed for periodic multiple quantum well structures with periods at or close to Bragg resonance condition at the wavelength of the exciton resonance. The results obtained used to discuss recent reflection and luminescent experiments by M. H\"{u}bner et al [Phys. Rev. Lett. {\bf 83}, 2841 (1999)] carried out with long multiple quantum well structures. It is argued that the discussion of quantum well structures with large number of wells is more appropriate in terms of normal modes of infinite periodic structures rather then in terms of super- and sub- radiant modes.

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