Effects of light on cesium 6S-8S two-photon transition
2010
Abstract 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.
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