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  • 1
    Electronic Resource
    Electronic Resource
    Field-dependent absorption in superlattices: Comparison of theory and experiment (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 73 (1998), S. 2612-2614 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Absorption and differential electroabsorption spectra of a GaInAs/InP superlattice in the regime of Wannier–Stark localization are compared with spectra derived from the Semiconductors Bloch Equations. The absorption is strongly underestimated for higher energies by the effective mass approximation but good agreement is achieved by using an energy dependent in-plane effective mass. No fitting parameters are used except for a phenomenological broadening. The lineshape of the field-modulated spectra is dominated by the strong field dependence of Wannier–Stark transitions and depends on the amplitude of the modulating field which should be kept small for best results. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.122522
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  • 2
    Electronic Resource
    Electronic Resource
    Anisotropic emission of interface fluctuation quantum dots (2002)
    Springer
    The European physical journal 27 (2002), S. 571-576 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 78.67.Hc Quantum dots – 78.60.-b Other luminescence and radiative recombination – 78.70.-g Interactions of particles and radiation with matter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We calculate energy levels, dipole moments and radiative broadening of interface fluctuation quantum dots. For optically allowed states, the dipole moment grows proportionally to the lateral quantum dot radius while the radiative broadening saturates towards the quantum well radiative broadening for large lateral quantum dot radii. This is accompanied by a change in the angular emission pattern, concentrating emission in forward and backward direction. Optically forbidden states do not couple to light propagating in the growth direction yet they may have a considerable radiative broadening due to spontaneous emission in other directions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2002-00191-0
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