Introduction to Atomic Frequency Standards - 2011 Joint Conference ...
Introduction to Atomic Frequency Standards - 2011 Joint Conference ...
Introduction to Atomic Frequency Standards - 2011 Joint Conference ...
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PP Short-term stability<br />
Signal<br />
Q?<br />
0<br />
RF <strong>Frequency</strong><br />
<br />
0 from choice of a<strong>to</strong>m<br />
Q = 0/<br />
Equation 1 revisited:<br />
( )<br />
( S / N)<br />
Q<br />
from collisions (a<strong>to</strong>m-a<strong>to</strong>m, a<strong>to</strong>m-buffer gas, a<strong>to</strong>m-wall), laser power, …<br />
S/N?<br />
Signal: Choice of a<strong>to</strong>m, laser spectrum/polarization, buffergas optimization,…<br />
Noise: pho<strong>to</strong>n shot noise, a<strong>to</strong>m shot noise, laser noise, electronic noise, …<br />
<br />
1<br />
<br />
82