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 | 2013/4 |
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
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).