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Femtosecond lasers began to draw attention as a new light source for high-precision absolute distance measurements (ADMs) allowing for advanced principles such as synthetic wavelength generation, Fourier-transform-based dispersive analysis and multi-wavelength interferometry. In this talk, we present the state-of-the-art measurement principles and performance demonstrated by exploiting the unique...
The optical frequency generator built using the optical comb of a femtosecond laser enables absolute distance measurements with sub-wavelength precision by performing multi-wavelength interferometry. This method will benefit precise manufacture of large objects and also future space missions.
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