PH30077: Electromagnetism 2
 Academic Year: | 2019/0 |
| Owning Department/School: | Department of Physics |
| Credits: | 6 [equivalent to 12 CATS credits] |
| Notional Study Hours: | 120 |
| Level: | Honours (FHEQ level 6) |
| Period: |
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| Assessment Summary:
| EX-TH 100%* |
| Assessment Detail: |
*Assessment updated due to Covid-19 disruptions |
| Supplementary Assessment: |
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| Requisites: | Before taking this module you must ( take PH20014 OR take PH20061 ) AND ( take PH20017 OR take PH20063 ) AND ( take PH20020 OR take MA20223 OR take PH20107 ) |
| Description:
| Aims: An aim of this unit is to provide a mathematical framework for the description of the radiation, transmission, reception and guidance of electromagnetic energy. A further aim is to introduce the interaction of electromagnetic waves with matter, focussing particularly on processes of absorption, reflection, luminescence and scattering within materials. Learning Outcomes: After taking this unit the student should be able to: * describe dipole radiation using magnetic vector potentials; * explain the basic features of guided modes in metallic, dielectric and fibre waveguides; * derive expressions for the real and imaginary parts of the complex dielectric constant of a dipole oscillator; * apply the dipole oscillator model to describe features in the optical response of dielectrics, semiconductors and metals; * describe optical emission and absorption processes in terms of electronic band structure; * outline the main physical principles underlying Rayleigh, Brillouin and Raman scattering. Skills: Numeracy T/F A, Problem Solving T/F A. Content: Transform methods in optics (3 hours): Review of wave theory of light. Fraunhofer diffraction. Introduction to Fourier optics. Radiation (3 hours): Electromagnetic potentials, retarded potentials, near and far fields, radiation from a Hertz dipole. Guided waves (6 hours): Metal and dielectric waveguides, optical fibres. Introduction to optical processes in materials (3 hours): Absorption, emission, scattering. Complex refractive index and dielectric function. Material classes and electronic band structure. Lorentz model (3 hours): Application to describing the optical properties of insulators and the interaction of light with lattice vibrations. Interband optical processes (1 hour): Direct and indirect transitions, excitons, quantum wells. Drude-Lorentz model of free electron plasmas (2 hours): Reflectivity of metals and the ionosphere, effect of interband absorption in metals, free electron absorption in semiconductors, bulk, surface and localized plasmons. Elastic and inelastic light scattering (1 hour): Rayleigh, Brillouin and Raman scattering. Introduction to structured photonic materials (1 hour): Metamaterials, photonic crystals and colour in nature. |
| Programme availability: |
PH30077 is Compulsory on the following programmes:Department of Physics
PH30077 is Optional on the following programmes:Department of Physics
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