NASA NTRS · 20060039793
Phase modulation for reduced vibration sensitivity in laser-cooled clocks in space
Abstract
The standard interrogation technique in atomic beam clocks is square-wave frequency modulation (SWFM), which suffers a first order sensitivity to vibrations as changes in the transit time of the atoms translates to perceived frequency errors. Square-wave phase modulation (SWPM) interrogation eliminates sensitivity to this noise.
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Klipstein, W., Dick, G., Jefferts, S., Walls, F.. 2001-03-06. Phase modulation for reduced vibration sensitivity in laser-cooled clocks in space. https://ntrs.nasa.gov/citations/20060039793
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