Lecture 8: Laser amplifiers
Lecture 8: Laser amplifiers
Lecture 8: Laser amplifiers
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Gain bandwidth<br />
<br />
If the lineshape function is Lorentzian, the gain coefficient is<br />
then also Lorentzian with the same width<br />
( )<br />
2<br />
( <br />
/ 2)<br />
( <br />
0)<br />
2<br />
( <br />
) ( <br />
/ 2)<br />
0<br />
2<br />
where the peak gain coefficient at the central frequency 0<br />
( ) <br />
0<br />
2<br />
c<br />
2 2<br />
4<br />
n <br />
N 2<br />
sp<br />
<br />
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