An Introduction to Lasers and Laser Systems. Instructors: Prof. Dhruba J. Biswas and Prof. J. Padma Nilaya, Department of Physics. The invention of the laser in 1960 was a major breakthrough that has had a profound impact on science and our everyday lives, from medicine to manufacturing to defence to telecommunications. To stay up-to-date with this rapidly evolving field, we propose a 30-lecture series on lasers for both undergraduate, postgraduate and research students. The course will begin with an introduction to the basics of lasers, and then build on this foundation to discuss the major developments in laser technology over the years. This standalone course will take an intuitive approach instead of the more common mathematical approach, making it accessible to students with an inquisitive mind and a high school level physics background in addition to researchers who make use of lasers in their day-to-day work. By the end of the course, students will have a solid understanding of what a laser is, how it works, and what makes the light it creates so special. They will also be able to apply their knowledge to solve problems and design new laser systems.
(from nptel.ac.in)
Lecture 10 - Young's Double Slit Experiment and Interference of Light