| Theory of Saturated Absorption |
| Pump |
| Probe |
| Gas Cell |
| Beer’s Law |
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| § | Pump and probe burn independent holes |
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| while scanning
velocity classes |
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| § | The only time they see each other is when |
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| they are
resonant |
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| § | Ipump >> Iprobe (Iprobe < (0.05) Ipump) |
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