Module 8 :
Laser- II
Lecture :
Rate equations for Lasers
Objectives
In this lecture you will learn the following
Maser
Rate Equations for a Two Level System
Three Level Laser
Rate Equations for a Three Level System
Four Level Laser
Rate Equations for a Four Level System
Fabry - Perot Cavity and Laser Oscillation
Gain Saturation
Properties of Laser Beam
Spatial Coherence
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
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23
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27
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