Exciton radiative decay and polaritons in multiquantum wells: quantum-well-to-superlattice crossover

Citrin, D. S.

doi:10.1016/0038-1098(94)90394-8

Cited by 56 publications

(34 citation statements)

References 22 publications

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“…In structures with a small number of wells, the spectrum of these collective excitations consists of a discrete number of quasi-stationary (radiative) modes with a re-distributed oscillator strength: the modes can be classified as super-or sub-radiant. 2,3,5 With an increase of the number of wells in the structure, the radiative life-time of the latter decreases, and the lifetime of the former increases. When the number of periods in the structure becomes large enough, the modes of the MQW are more conveniently described in terms of stationary polaritons of infinite periodic structures.…”

Section: Introductionmentioning

confidence: 99%

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

Erementchouk

Lisyansky

2004

Phys. Rev. B

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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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Section: Introductionmentioning

confidence: 99%

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

Erementchouk

Lisyansky

2004

Phys. Rev. B

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“…[23][24][25][26][27] In MQW Bragg structures, where the interwell distance amounts to half the optical wavelength at the exciton resonance, superradiant coupling was predicted 28,29 and observed [30][31][32] in reflection and degenerate four-wave-mixing ͑DFWM͒ experiments as a collective quantum-well effect mediated by the optical field. At other periodicities the light coupling was predicted 33,34 and observed 20,35,36 to give rise to polaritonic eigenmodes in nonresonant photoluminescence, reflection, transmission, and RRS. Signatures of the modes were also observed in DFWM experiments.…”

Section: Introductionmentioning

confidence: 95%

Resonance Rayleigh scattering from semiconductor heterostructures: The role of radiative coupling

et al. 2001

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The resonance Rayleigh scattering from disordered semiconductor heterostructures is investigated. Within a generalized transfer-matrix approach, the propagation of the optical field and the linear material response in the presence of disorder are solved self-consistently. To investigate the role of radiative coupling, studies for a single quantum well, multiple quantum wells, and a quantum well embedded in a microcavity are performed. It is shown that the dynamics of the resonance Rayleigh scattered signals is not only determined by the underlying disorder potential, but also by the properties of the polaritonic eigenmodes of the system. In certain cases the polaritonic coupling effects even dominate over the disorder.

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“…(36), (37) and (39) to derive (a, f )-representation for T . The dispersion equation following from this representation has a relatively simple form:…”

Section: Off-bragg Structuresmentioning

confidence: 99%

Spectral properties of exciton polaritons in one-dimensional resonant photonic crystals

Erementchouk

Lisyansky

2006

Phys. Rev. B

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The dispersion properties of exciton polaritons in multiple-quantum-well based resonant photonic crystals are studied. In the case of structures with an elementary cell possessing a mirror symmetry with respect to its center, a powerful analytical method for deriving and analyzing dispersion laws of the respective normal modes is developed. The method is used to analyze band structure and dispersion properties of several types of resonant photonic crystals, which would not submit to analytical treatment by other approaches. These systems include multiple quantum well structures with an arbitrary periodic modulation of the dielectric function and structures with a complex elementary cell. Special attention was paid to determining conditions for superradiance (Bragg resonance) in these structures, and to the properties of the polariton stop band in the case when this condition is fulfilled (Bragg structures). The dependence of the band structure on the angle of propagation, the polarization of the wave, and the effects due to exciton homogeneous and inhomogeneous broadenings are considered, as well as dispersion properties of excitations in nearBragg structures.

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Exciton radiative decay and polaritons in multiquantum wells: quantum-well-to-superlattice crossover

Cited by 56 publications

References 22 publications

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

Resonance Rayleigh scattering from semiconductor heterostructures: The role of radiative coupling

Spectral properties of exciton polaritons in one-dimensional resonant photonic crystals

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