Saturation Intensity and Power

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SUMMARY

The discussion centers on determining the saturation power (P_{sat}) and intensity (I_{sat}) from experimental data involving a laser beam passing through a Rubidium-85 and Rubidium-87 cell. The user collected spectral amplitudes (A) and widths (Δv) at varying incident powers (P_{incident}) of 100 μW. The challenge lies in identifying the appropriate fitting function for the limited data set of five values to derive P_{sat} and I_{sat} accurately.

PREREQUISITES
  • Understanding of laser physics and saturation effects
  • Familiarity with Rubidium atomic transitions
  • Knowledge of spectral analysis techniques
  • Experience with data fitting and curve analysis
NEXT STEPS
  • Research the mathematical models for saturation intensity in laser systems
  • Explore data fitting techniques using software like MATLAB or Python's SciPy
  • Study the relationship between power and spectral characteristics in atomic systems
  • Investigate the effects of different transition rate plates on laser power
USEFUL FOR

Physicists, optical engineers, and researchers involved in laser spectroscopy and atomic physics who are analyzing saturation effects in laser beams.

ChrisVer
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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.
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 P_{in}= 100 \mu W... Then using different transition rate (T) plates I was able to change the power of the beam...
So I was able to get the spectra's amplitudes A and widths \Delta v for different P_{incident} (check attachments)...

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

Attachments

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Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 

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