Physics

Physics

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  • Kumar, Ravi (University College Cork, 2015)
    Optical nanofibres (ONFs) are very thin optical waveguides with sub-wavelength diameters. ONFs have very high evanescent fields and the guided light is confined strongly in the transverse direction. These fibres can be ...
  • Coughlan, Conor Terence (University College Cork, 2016)
    This thesis divides into two distinct parts, both of which are underpinned by the tight-binding model. The first part covers our implementation of the tight-binding model in conjunction with the Berry phase theory of ...
  • Harnedy, Patrick (University College Cork, 2015)
    Incumbent telecommunication lasers emitting at 1.5 µm are fabricated on InP substrates and consist of multiple strained quantum well layers of the ternary alloy InGaAs, with barriers of InGaAsP or InGaAlAs. These lasers ...
  • Murphy-Armando, Felipe; Fahy, Stephen B. (American Physical Society, 2006-09)
    First-principles electronic structure methods are used to find the rates of intravalley and intervalley n-type carrier scattering due to alloy disorder in Si1-xGex alloys. The required alloy scattering matrix elements are ...
  • Murphy-Armando, Felipe; Fahy, Stephen B. (American Institute of Physics Publishing, 2011-06-02)
    First-principles electronic structure methods are used to predict the rate of n-type carrier scattering due to phonons in highly-strained Ge. We show that strains achievable in nanoscale structures, where Ge becomes a ...

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