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Stanford PNT hollberg Nov07 b - Stanford Center for Position ...

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Hg +<br />

~1 fs per<br />

tooth<br />

Mechanical Analogy of the Optical Clock<br />

Femtosecond Laser Comb<br />

1,000,000:1 Reduction Gear<br />

(not to scale)<br />

Microwave Output<br />

~1 ns per tooth<br />

Counter &<br />

Display

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