Statistics – Applications
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.340..511d&link_type=abstract
In ESA, Frequency and Time Forum p 511-514 (SEE N93-24978 09-70)
Statistics
Applications
Atomic Beams, Atomic Clocks, Cesium, Frequency Discriminators, Frequency Stability, Laser Applications, Frequency Standards, Metrology, Signal To Noise Ratios, Tunable Lasers
Scientific paper
Frequency stabilized lasers are required for many applications such as length metrology, telecommunications and optically pumped atomic frequency standards. Linear and saturated absorption atomic vapor cells are traditionally used as frequency discriminators to lock the laser frequency to an atomic transmition (for example, the D1 and D2 lines in Cs or Rb). The problems associated with these discriminators may be overcome by using a short and intense atomic beam as a reference. Theoretical considerations show that with a proper design of the atomic beam collimator, an atomic beam discriminator can combine a small residual Doppler width with a high signal to noise ratio and signal to background ratio. The experimental results obtained in a Cs beam show that this high performance discriminator can be realized in practice in a very compact sealed cell, comparable in size with a simple absorption cell.
Dudle Gregor
Thomann T.
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