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High-accuracy self-correction of air refractive index was demonstrated with simultaneous measurement of group and phase indices. Using precise detection of the pulse envelope and the carrier phase with an optical frequency comb interferometer, a method similar to the two-color correction method was applied, but using a light source in a single wavelength region. In this study, air refractive index...
Extremely high-accuracy self-correction of the air refractive index was achieved using two-color comb interferometry exhibiting phase difference measurement with 10−11-order resolution. Obtained 10−9-order self-correction accuracy over 61-m exceeded the limit of empirical equation.
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