Effects of light on cesium 6S–8S two-photon transition

This work presents a simple approach for determining the contribution of Lorentzian or Gaussian statistics by data fitting the spectrum to a Voigt profile. The fitting result shows that the Lorentzian width remains almost constant (∼1.51 MHz) and the Gaussian width increases (∼1.0–2.0 MHz) while cha...

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Bibliographic Details
Published in:Optics communications 2010-05, Vol.283 (9), p.1788-1791
Main Authors: Lee, Yi-Chi, Chui, Hsiang-Chen, Chen, Ying-Yu, Chang, Yi-Hsiu, Tsai, Chin-Chun
Format: Article
Language:English
Subjects:
Cesium
Density
Exact sciences and technology
Fittings
Fundamental areas of phenomenology (including applications)
Gaussian
Infrared
Lasers
Line shapes and shifts
Linewidth
Nonlinear optics
Optical susceptibility, hyperpolarizability
Optics
Physics
Stark effect
Statistics
Two-photon absorption spectroscopy
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Summary:This work presents a simple approach for determining the contribution of Lorentzian or Gaussian statistics by data fitting the spectrum to a Voigt profile. The fitting result shows that the Lorentzian width remains almost constant (∼1.51 MHz) and the Gaussian width increases (∼1.0–2.0 MHz) while changing the laser intensity or atomic density. The frequency shift associated with the cesium 6S–8S two-photon transition as a function of laser power is approximately - 7.25 ( 45 ) Hz / ( mW / mm 2 ), agrees closely with the theoretical value. These results can be used to improve the optical secondary frequency standard in the near infrared region.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2009.12.048