EP408: Opto-Electronics

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Syllabus

• Summary of perturbation theory. Hydrogen atom wavefunctions.
• Multielectron atoms, classification of electronic states. Spectroscopic term notation. Energy level diagrams for representative atoms, Na, Mg, He. Molecular spectra. Stimulated and spontaneous processes.
• Calculation of electric dipole spontaneous emission probability. Calculation of absorption coefficient. Selection rules, line broadening, magnetic dipole processes.
• Modes and losses in optical resonators. Gain condition in a resonant material, population inversion. Laser action, three and four-level laser systems. Laser modes.
• Specific laser systems - Argon, Nitrogen, He-Ne, CO2, Dye, Semiconductor. Mode locking, Q-switching.
• Laser applications. Optical properties of materials.
• Metals. Ionic solids: optically active dopants and colour centres. Covalent solids; organic luminescence. Semiconductor luminescence and absorption. Light emitting diodes and laser diodes.
• Fibre-optic communications - losses in fibres, modes, fibre types, mode dispersion, sources and detectors. Optical Time-Domain Reflectometry. Flux budget.
• Photodetectors - PMT, photoconductors, photodiodes (PIN and APD). Noise limitations. Optical modulation - mechanical, acousto - and electro-optic devices.

Lecturer

thomas.glynnnuigalway.ie

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