Hi, I am not sure if this is an easy question, but I've been looking around and I haven't been able to find some exact equation to this.(adsbygoogle = window.adsbygoogle || []).push({});

I performed an experiment where I allowed for a laser beam to go through a cell (of Rubidium-85 and 87) and got the resulting spectrum. The initial [100%] power was [itex]P_{in}= 100 \mu W[/itex]... Then using different transition rate ([itex]T[/itex]) plates I was able to change the power of the beam...

So I was able to get the spectra's amplitudes [itex]A[/itex] and widths [itex]\Delta v[/itex] for different [itex]P_{incident}[/itex] (check attachments)...

How is the [itex] P_{incident}(A), P_{incident}((\Delta v)^2)[/itex] can give the saturation power [itex]P_{sat}[/itex] and intensity [itex]I_{sat}[/itex] ? In fact I don't know with what function to fit these [itex]P[/itex]'s since I only got 5 values and the function form is not obvious.

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# Saturation Intensity and Power

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