Electromagnetic waves in nonlinear and linear magnetooptic metamaterials

Mitchell-Thomas, RC 2011, Electromagnetic waves in nonlinear and linear magnetooptic metamaterials , PhD thesis, University of Salford.

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Abstract

This thesis provides an insight into the world of metamaterials, and the way in which waves propagate within them. It begins with an introduction to metamaterials, that includes a generic definition and a fascinating array of models are outlined. An emphasis is placed on the nonlinear properties of metamaterials and their soliton propagation properties. A thorough investigation of both temporal and spatial solitons is at the heart of this thesis, and in both cases the nonlinear Schrodinger equation is an appropriate model for propagation of weakly nonlinear waves. Metamaterials that possess electric and magnetic nonlinearity are comprehensively described. Additional functionality is added to the behaviour of spatial solitons through a form of diffraction-management, and the polarisation dependence of higher-order effects is also discussed. This results in some interesting outcomes for the role of nonlinear diffraction. For temporal solitons, selfsteepening and Raman scattering are investigated and it is shown how the metamaterial properties impact upon their coefficients. For both beams and pulses, the impact of magnetooptic control is investigated. Once again, polarisation is a vital consideration, and some important conclusions involving potential wells are examined. All of these ideas are validated by numerous numerical simulations. The final part of the thesis discusses the fascinating area of transformation optics and how this new field has developed recently. The way in which cloaking devices are implemented is described, and the possibility of adding a magnetooptic switching functionality to the standard electromagnetic cloak is presented. Finally, conclusions are given and some comments about the future directions are made.

Item Type: Thesis (PhD)
Contributors: Boardman, A (Supervisor)
Schools: Schools > School of Computing, Science and Engineering
Depositing User: Institutional Repository
Date Deposited: 12 Aug 2021 13:53
Last Modified: 27 Aug 2021 21:56
URI: http://usir.salford.ac.uk/id/eprint/61497

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