Lecture 11 of 38Module 4
Laser Amplifiers
Prof. M R Shenoy · IIT Delhi
Credits and licence
- From
- Introduction to LASER, IIT Delhi (at NPTEL)
- Licence
- CC BY-NC-SA, as NPTEL states it. Non-commercial use only.
- Attribution
- NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
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- Tweens profiles and older. How courses are placed
All the lectures
- General Introduction, Scope and Contents
- Interaction of Radiation with Matter
- The Einstein Coefficients
- Atomic Lineshape Function, g(ν)
- Amplification by Stimulated Emission
- Line Broadening Mechanisms
- Line Broadening Mechanisms - 2
- Laser Rate Equations: 2-Level System
- Laser Rate Equations: 3-Level System
- Laser Rate Equations: 4-Level System
- Laser Amplifiers
- Er-Doped Fiber Amplifier
- Resonance Frequencies
- Spectral Response of an Optical Resonator
- Resonator Loss and Cavity Lifetime
- Spherical Mirror Resonators
- Resonator Stability Condition
- Ray Paths in Spherical Mirror Resonators
- Tranverse Modes of a Spherical Mirror Resonator
- Gaussian Mode of the Spherical Mirror Resonator
- Longitudinal Modes of a Spherical Mirror Resonator
- Laser Oscillations & The Threshold Condition
- Spectral Hole Burning
- Variation of Laser Power around Threshold
- Optimum Output Coupling
- Laser Output Characteristics
- Laser Beam Properties
- Ultimate Linewidth of a Laser
- Pulsed Lasers
- Q-Switching
- Mode Locking
- Methods of Mode Locking
- Some Common Lasers
- Fiber Lasers
- Semiconductor Lasers
- Lasers and Laser Amplifiers in Optical Fiber Communication
- Lasers in Nonlinear Optics
- Laser Safety