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On the Lorentzian-like function in saturated absorption spectroscopy
New Phys.: Sae Mulli
Published online April 19, 2018;  
© 2018 New Physics: Sae Mulli.

Heung-Ryoul Noh*
Received March 9, 2018; Revised April 6, 2018; Accepted April 7, 2018.
We present a theoretical study on the Lorentzian-like function found in analytical solutions of saturated absorption spectra for multilevel atoms. This is analogous to the Lorentzian function and cannot be expressed in an exact analytical form. We find analytical solutions at the two extreme conditions for the parameter determining the linewidth. We also find an exact analytical form for the peak value and approximate expression for the full width at half-maximum of the spectrum.

April 2018, 68 (4)
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