PX3243: Laser Physics and Non-Linear Optics
| School | Cardiff School of Physics & Astronomy |
| Department Code | PHYSX |
| Module Code | PX3243 |
| External Subject Code | 100425 |
| Number of Credits | 10 |
| Level | L6 |
| Language of Delivery | English |
| Module Leader | Professor Peter Smowton |
| Semester | Spring Semester |
| Academic Year | 2014/5 |
Outline Description of Module
- To develop an understanding of the fundamental physics of lasers and non-linear optics.
- To provide an awareness of some applications of lasers and the associated physics.
- To introduce students to laser device design and performance.
On completion of the module a student should be able to
- Describe the interaction of light with matter in the linear and non-linear regimes using classical and semi-classical theories, and express this mathematically.
- Evaluate the conditions necessary for coherent optical amplification, and describe how this may be achieved in various laser systems.
- Describe the effect of optical cavities upon the laser radiation and explain laser threshold.
- Formulate an analytical description of laser operation using differential equations for the electron and photon populations within a laser.
- Explain Q-switching and mode-locking within lasers, and describe how they lead to short pulse operation.
- Describe the application of non-linear processes in laser systems and applications.
- Demonstrate an understanding of specific examples of laser devices and applications.
How the module will be delivered
Lectures 22 x 1 hr, Exercises.
Skills that will be practised and developed
Problem solving. Investigative skills. Mathematics. Analytical skills. Communication skills.
How the module will be assessed
Examination 80%. Coursework 20%. [Examination duration: 2 hours]
Assessment Breakdown
| Type | % | Title | Duration(hrs) |
|---|---|---|---|
| Exam - Spring Semester | 80 | Laser Physics And Non-Linear Optics | 2 |
| Written Assessment | 20 | Laser Physics And Non-Linear Optics | N/A |
Syllabus content
- Introduction: Classical electron oscillator model. Fundamental optical processes: absorption, spontaneous emission, stimulated emission. Quantum mechanical dipole matrix element.
- Basic principles: Gain processes, optical feedback, resonators, modes, spectral linewidth.
- Frequency and intensity distributions: temporal behaviour, Q-switching, mode-locking.
- Lasers and non-linear materials: second-harmonic generation, phase matching, optical parametric oscillators, third-order non-linear processes, optical Kerr effect.
- Laser systems: Solid, liquid and gaseous systems. The semiconductor laser.
- Applications of lasers: Examples including communications, manufacturing, medical and future applications.
Essential Reading and Resource List
Please see Background Reading List for an indicative list.
Background Reading and Resource List
Optoelectronics, J Wilson and J F B Hawkes (Pearson).
Laser Fundamentals, W T Silfvast (Cambridge University Press).
Lasers, A Siegman. (University Science Books).
Optics, E Hecht, 3rd Edn (Addison Wesley).
Optical Properties of Solids, M Fox. (Oxford).
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