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In this video you will learn
0:00 Topics to be discussed
0:56 Basic Concept of Threshold Condition For Lasing Action
4:14 Intensity change in the medium
9:48 Amplification During Round Trip
10:01 Condition for Lasing
12:53 Threshold Gain Coefficient
Basic Concept:
For lasing to occur, the gain provided by the amplifying medium must be at least equal to the losses in the cavity. The condition can be expressed as:
Net Gain=Cavity Losses
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