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Introduction to LASER

Introduction to LASER. Instructor: Prof. M.R. Shenoy, Department of Physics, IIT Delhi. This course introduces LASER to senior undergraduate students, as well as first year postgraduate students. The objective is to provide a detailed account of the basic physics, including resonator physics, and the principle of operation of Lasers. Issues relevant to the design and output characteristics of the Lasers, and some specific laser systems would also be discussed. (from nptel.ac.in)

Lecture 22 - Laser Oscillations and the Threshold Condition

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Lecture 01 - General Introduction, Scope and Contents

Lecture 02 - Interaction Radiation with Matter

Lecture 03 - The Einstein Coefficients

Lecture 04 - Atomic Line Shape Function

Lecture 05 - Amplification by Stimulated Emission

Lecture 06 - Line Broadening Mechanisms

Lecture 07 - Line Broadening Mechanisms (cont.)

Lecture 08 - Laser Rate Equations: 2-level System

Lecture 09 - Laser Rate Equations: 3-level System

Lecture 10 - Laser Rate Equations: 4-level System

Lecture 11 - Laser Amplifiers

Lecture 12 - Er-Doped Fiber Amplifier

Lecture 13 - Resonance Frequencies

Lecture 14 - Spectral Response of an Optical Resonator

Lecture 15 - Resonator Loss and Cavity Lifetime

Lecture 16 - Spherical Mirror Resonators

Lecture 17 - Resonator Stability Condition

Lecture 18 - Ray Paths in Spherical Mirror Resonators

Lecture 19 - Transverse Modes of a Spherical Mirror Resonator

Lecture 20 - Gaussian Mode of the Spherical Mirror Resonator

Lecture 21 - Longitudinal Modes of a Spherical Mirror Resonator

Lecture 22 - Laser Oscillations and the Threshold Condition

Lecture 23 - Spectral Hole Burning

Lecture 24 - Variation of Laser Power around Threshold

Lecture 25 - Optimum Output Coupling

Lecture 26 - Laser Output Characteristics

Lecture 27 - Laser Beam Properties

Lecture 28 - Ultimate Linewidth of a Laser

Lecture 29 - Pulsed Lasers

Lecture 30 - Q-Switching

Lecture 31 - Mode Locking

Lecture 32 - Methods of Mode Locking

Lecture 33 - Some Common Lasers

Lecture 34 - Fiber Lasers

Lecture 35 - Semiconductor Lasers

Lecture 36 - Lasers and Laser Amplifiers in Optical Fiber Communication

Lecture 37 - Lasers in Nonlinear Optics

Lecture 38 - Laser Safety