Effects of inhomogeneous broadening on reflection spectra of Bragg multiple quantum well structures with a defect

Details Effects of inhomogeneous broadening on reflection spectra of Bragg multiple quantum well structures with a defect Effects of inhomogeneous broadening on reflection spectra of Bragg multiple quantum well structures with a defect

2003-06-24

arxiv.org/abs/cond-mat/0306615v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

27 pages, 6 eps figures; RevTex

Scientific paper

10.1103/PhysRevB.69.075308

The reflection spectrum of a multiple quantum well structure with an inserted defect well is considered. The defect is characterized by the exciton frequency different from that of the host's wells. It is shown that for relatively short structures, the defect produces significant modifications of the reflection spectrum, which can be useful for optoelectronic applications. Inhomogeneous broadening is shown to affect the spectrum in a non-trivial way, which cannot be described by the standard linear dispersion theory. A method of measuring parameters of both homogeneous and inhomogeneous broadenings of the defect well from a single CW reflection spectrum is suggested.

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