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Comb Teeth Resolving Fourier Transform Spectroscopy

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Comb Teeth Resolving Fourier Transform Spectroscopy

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  • Author: Petr Balling, Benjamin Sprenger
The Czech Metrology Institute (CMI) investigates femtosecond comb interferometric spectroscopy in a conventional arrangement with a moving mirror. An auxiliary cw laser is used for linearization of the sampling. Scanning and detection over an interval longer than the distance between two consecutive pulses of the frequency comb allow for spectrally resolving the individual frequency modes of the comb. Fourier spectroscopy typically uses a scanning arrangement including balanced lengths of interferometer arms, and the sample is placed at the interferometer output in front of the detector.

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