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Combs rule

The ability to measure distances with high precision is of fundamental importance. Femtosecond optical frequency combs offer an intriguing solution to the problem and could prove invaluable in space satellite missions of the future.

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Figure 1: Milestones in the development of optical interferometers for distance measurements.


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Kim, SW. Combs rule. Nature Photon 3, 313–314 (2009).

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