Open AccessOvercoming the refractivity limit in manufacturing environment
Author(s) -
Karl Meiners-Hagen,
Tobias Meyer,
Günther Prellinger,
Wolfgang Pöschel,
Denis Dontsov,
Florian Pollinger
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.024092
Subject(s) - optics , refractive index , interferometry , dispersion (optics) , wavelength , compensation (psychology) , limit (mathematics) , materials science , benchmark (surveying) , laser , physics , mathematics , psychology , mathematical analysis , geodesy , psychoanalysis , geography
We present a tracking interferometer with an intrinsic compensation of the refractive index of air. By using both wavelengths of a frequency doubled Nd:YAG laser the refractive index of air can be determined and compensated by the dispersion. One dimensional benchmark verification experiments in air conditioned and typical harsh, uncontrolled environment show an asymptotic length dependent uncertainty in the order of 0.1 μm/m for distances over 10 m, proofing the potential of this approach for high accuracy measurements in industrial environments.