Introduction - Characteristics of optical radiation, luminescence, irradiance - Optical Sources - Photo Detectors - Opto-couplers and their application in analog and digital devices. Optical Fiber Fundamentals - modes, types of optical fibers - fiber coupling - Fiber optic sensors for common industrial parameters - V, I, pressure, temperature - IR sources and detectors - fiber optic gyroscope.
Characteristics of LASERS - Einstein’s equations - population inversion two, three and four level system. Laser rate equation, properties – modes - Resonator configurations - Q switching and mode locking, cavity dumping, single frequency operation - Types of Lasers. Applications - Lasers for measurement of distance and length, velocity, acceleration, atmospheric effects, pollutants.
Material processing applications - Laser heating, melting, scribing, splicing, welding and trimming of materials, removal and vaporization.
Holographic Interferometry and Applications – Holography for non-destructive testing – medical applications - lasers and tissue interaction -surgery – dermatology