Courses Catalogue

Principles Of Optics And Lasers

COURSE CODE: PHY7217
COURSE CREDIT UNIT: 4
ACADEMIC PROGRAMME: Physics, M.Sc
COLLEGE/SCHOOL/FACULTY: School of Natural and Applied Sciences
STATUS: Elective
PROGRAMME TYPE: Postgraduate

Course Description

The course gives an introduction to laser physics, with emphasis on the basic principles of amplification by stimulated emission. The general classical theory for the high-power free electron laser is developed from basic physical principles. Maxwell's wave equation to description of both the electron and wave dynamics. The central theme is the development of ship defense with directed energy lasers. Extensions of the simple theory are then used to discuss more complex behavior such as the trapped-particle instability, the tapered undulator designer higher power, optical mode competition, short pulse evolution, and transverse diffraction effects. Topics include Laser Applications, Non-Linear Optics, Roby laser, Nd: YAG laser, Nd, Laser Parameters and Their Measurement, Gas and Dye Lasers, Optical Resonators.

COURSE JUSTIFICATION/RATIONALE

The course aims to provide students with an opportunity to develop their knowledge and understanding of the key principles and applications of lasers and optics, and their relevance to current developments in physics.

LEARNING OBJECTIVES

By the end of this course, the student should be able to:

 Explain the principles of laser physics.

 Explain different types of laser and accessories available and their selected applications.

 Identify instruments and equipments handling techniques during laser surgery.

 Derive the expression for gain and understand the importance of population inversion if gain is to have the correct sign.

Describe the basic operation of a laser with reference to a 3- and 4- level laser medium and appreciate the advantages of 4-level systems.

 Explain the modifications to the gain resulting from saturation.

Categorize and briefly describe the properties of the following laser media; ruby, He-Ne, titanium sapphire, Nd:YAG and semiconductors.

Describe the operation of a Q-switched laser and be able to compute the peak power output of such a laser from knowledge of pump energy density and other relevant parameters.

Explain (a) optical parametric processes, (b) sum-frequency mixing and (c) the Kerr non-linearity.

LEARNING OUTCOMES

A student completing the course is expected to demonstrate knowledge of:

The principles of laser physics.

The different types of laser and accessories available and their selected applications.

The instruments and equipments handling techniques during laser surgery.

The importance of population inversion if gain is to have the correct sign.

The basic operation of a laser with reference to a 3- and 4- level laser medium and appreciate the advantages of 4-level systems.

Explain the modifications to the gain resulting from saturation.

The properties of the following laser media; ruby, He-Ne, titanium sapphire, Nd:YAG and semiconductors.

The operation of a Q-switched laser and be able to compute the peak power output of such a laser from knowledge of pump energy density and other relevant parameters.