Linewidth in saturated absorption spectroscopy for two-level atoms: an empirical formula
We present an empirical formula for linewidth in saturated absorption spectroscopy for two-level atoms with cycling transition lines, taking the coherence term in the Doppler-broadened limit into account. The full width at half-maximum is obtained as (1+(1+as ) )γ , where s is the on-resonance satur...
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| Published in | Applied optics. Optical technology and biomedical optics Vol. 57; no. 14; p. 3881 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
10.05.2018
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| Online Access | Get more information |
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| Summary: | We present an empirical formula for linewidth in saturated absorption spectroscopy for two-level atoms with cycling transition lines, taking the coherence term in the Doppler-broadened limit into account. The full width at half-maximum is obtained as (1+(1+as
)
)γ
, where s
is the on-resonance saturation parameter, γ
is the transverse decay rate, and a and b are the parameters that depend on γ
. We find that as γ
increases, a and b approach 1 and 1/2, respectively. These are the typical values in the case without the coherence term. |
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| ISSN: | 2155-3165 |
| DOI: | 10.1364/AO.57.003881 |