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  • 1
    Electronic Resource
    Electronic Resource
    Polaritons in superlattices and in microcavities (1995)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 17 (1995), S. 1211-1218 
    Details
    ISSN: 0392-6737
    Keywords: Polaritons (including photon-phonon and photon-magnon interactions) ; Electrons states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds) ; III–V and II–VI inorganics ; Excitons and related phenomena (including electron-hole drops) ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary A description of polariton effects on excitons in multiple quantum wells (MQWs), superlattices (SLs), and semiconductor microvavities is presented. The non-local semi-classical theory in a transfer matrix formulation is adopted. The radiative width in MQWs atk=0 increases first with the number of wellsN, then goes to zero asN→∞, where stationary SL polaritons are recovered. The crossover from weak- to strong-coupling regimes for QW excitons in microcavities is described. The complex energies of the mixed exciton-radiation modes are shown to be measurable by time-resolved transmission experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457192
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Theory of exciton-polariton effects for a double quantum well in a microcavity (1995)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 17 (1995), S. 1651-1656 
    Details
    ISSN: 0392-6737
    Keywords: Excitons and related phenomena (including electron-hole drops) ; Polaritons (including photon-phonon and photon-magnon interactions) ; III–V semiconductors ; Cooperative phenomena ; superradiance and superfluorescence ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary We study excitons in double quantum wells (DQWs) embedded in a semiconductor microcavity (MC) by means of semi-classical theory, which yields analytic results in weak- and strong-coupling regimes. We show how to obtain subpicosecond radiative lifetime for the excitons. A model for disorder is investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457258
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Cavity-polariton dispersion and polarization splitting in single and coupled semiconductor microcavities (1999)
    Springer
    Physics of the solid state 41 (1999), S. 1223-1238 
    Details
    ISSN: 1063-7834
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Recent theoretical and experimental work on linear exciton-light coupling in single and coupled semiconductor microcavities is reviewed: emphasis is given to angular dispersion and polarization effects in the strong-coupling regime, where cavity-polariton states are formed. The theoretical formulation is based on semiclassical theory. The energy of single-cavity modes is determined by the Fabry-Pérot frequency ω c as well as by the center of the stop band ω s of the dielectric mirrors; the phase delay in the dielectric mirrors carries a nontrivial angle-and polarization dependence. The polarization splitting of cavity modes depends on the mismatch between ω c and ω s, and increases with internal angle as sin2 θ eff. Interaction between the cavity mode and quantum-well (QW) excitons is described at each angle by a two-oscillator model, whose parameters are expressed in terms of microscopic quantities. Weak and strong coupling regimes and the formation of cavity polaritons are described. Comparison with experimental results on a GaAs-based cavity with In0.13Ga0.87As QWs shows that a quantitative understanding of polariton dispersion and polarization splitting has been achieved. Coupling of two identical cavities through a central dielectric mirror induces an optical splitting between symmetric and antisymmetric modes. When QW excitons are embedded in both cavities at antinode positions, the system behaves as four coupled oscillators, leading to a splitting of otherwise degenerate exciton states and to separate anticrossing of symmetric and antisymmetric modes. These features are confirmed by experimental results on coupled GaAs cavities with In0.06Ga0.94As QWs. An analysis of reflectivity lineshapes requires the inclusion of the effect of resonance narrowing of cavity polaritons. Finally, the polarization splitting in a coupled cavity depends both on the single-cavity factors and on the angle-and polarization dependence of the optical coupling between the cavities. Inclusion of all these effects provides a good description of the experimental findings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1130973
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  • 4
    Electronic Resource
    Electronic Resource
    Coupled modes in parallel pillar microcavities: theory (2000)
    Springer
    The European physical journal 14 (2000), S. 611-615 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 42.25.Bs Wave propagation, transmission and absorption - 77.55.+f Dielectric thin films - 78.20.Bh Theory, models, and numerical simulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The photonic modes of two identical, parallel microcavities are studied as a function of various parameters controlling the strength of the interaction between the isolated cavities. Coupling between the modes, which is determined by the overlap between the decaying e.m. field produced by one cavity in the region occupied by the second one, removes the degeneracy between the fundamental modes of the isolated structures. The energy splitting is found to depend strongly on the radius of the cavities, their distance, and the refractive index contrast between the core and the external medium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510051069
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    Paper (German National Licenses)
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