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The invention of the femtosecond frequency comb (FC) laser has revolutionized the field of high-resolution spectroscopy, by providing very accurate reference frequencies in the optical domain, acting as a ‘frequency ruler’. Similarly, a frequency comb can be viewed as a ruler for distance measurement, which is based on the fact that the vacuum distance between subsequent pulses is known with the accuracy...
We experimentally demonstrate that the mode-locked femtosecond pulse laser is a promising tool for long distance metrology. Distances up to 50m in air were measured and compared to a conventional counting laser interferometer. The measurements were in agreement within 1 μm.
An optical frequency comb has been built at NMi van Swinden Laboratory. The first application is the realization of the coupling from the meter to the second. This is accomplished by measuring the frequency of an iodine‐stabilized helium‐neon laser (our primary length standard) directly with respect to our time standard. The second application that will be discussed is the use of the frequency comb...
We introduce a continuous model to study interpulse interference from a femtosecond frequency comb laser in dispersive media. We extend this model to pulse propagation for longer distances in dispersive media and compare the results to measurements for up to 200 m in air.
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