Actual limits of fluorescence S/N ratio in an optically-pumped cesium beam resonator

Details Actual limits of fluorescence S/N ratio in an optically-pumped cesium beam resonator Actual limits of fluorescence S/N ratio in an optically-pumped cesium beam resonator

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.340...87d&link_type=abstract

In ESA, Frequency and Time Forum p 87-90 (SEE N93-24978 09-70)

Mathematics

Atomic Beams, Cesium, Fluorescence, Optical Pumping, Resonators, Signal To Noise Ratios, Electromagnetic Noise, Frequency Stability, Laser Pumping, Mathematical Models

Scientific paper

The effect of laser noise on the Signal/Noise (S/N) ratio is reported and limits of this ratio are derived. The frequency stability of an optically pumped cesium beam resonator crucially depends on the fluorescence S/N ratio in the detection region. The total noise results from various noise sources: atomic shot noise, photon noise, laser frequency noise, and signal detection noise. A model which gives the fluorescence S/N ratio as a function of the main parameters characterizing the interaction between the atoms and the laser beam is developed. Variations of the S/N ratio with the atomic beam intensity and laser linewidth are presented for various excitation schemes. A good agreement is found between experiments and theory.

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