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Distance and Length Measurement with fs Comb Radiation

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Distance and Length Measurement with fs Comb Radiation

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  • Author: Petr Balling, Benjamin Sprenger
We have demonstrated an absolute interferometric measurement of distance using a femtosecond frequency comb and compared it with a counting interferometer displacement measurement. The relative agreement for distance measurement in known laboratory conditions is better than 10-8. A numerical model of pulse propagation in air has been developed. The interferometer uses the combined radiation of a stabilized cw laser and the fs comb.

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