Lecture 8: Laser amplifiers
Lecture 8: Laser amplifiers
Lecture 8: Laser amplifiers
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Three-level pumping<br />
<br />
Rapid<br />
decay<br />
Short-lived |3><br />
Long-lived |2><br />
Pump R<br />
<strong>Laser</strong> W i<br />
-1<br />
<br />
Ground state |1><br />
Here we assume that the rate of pumping into level 3<br />
is the same as the rate of pumping out of level 1.<br />
97<br />
97