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Interference Techniques for Measuring the surface Profile of Extended Samples
- Authors: Akhsakhalyan A.D.1, Mikhailenko M.S.1, Pestov A.E.1, Petrakov E.V.1, Glushkov E.I.1, Chernyshev A.K.1, Chkhalo N.I.1
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Affiliations:
- Institute of Physics of Microstructures RAS — Branch of the Federal Research Center “A.V. Gaponov-Grekhov Institute of Applied Physics RAS”
- Issue: No 6 (2025)
- Pages: 17–23
- Section: Articles
- URL: https://journal-vniispk.ru/1028-0960/article/view/376021
- DOI: https://doi.org/10.7868/S3034573125060039
- ID: 376021
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Abstract
Two interference techniques for measuring the surface profile of extended samples from 60 to 200 mm in length are developed. The profile is reconstructed by gluing separate frames taken with overlapping. It has been found that the angular reproducibility of the reconstructed profile in both techniques is less than 10 urad, which corresponds to a profile height difference of about 10 nm. When measuring surfaces with curvature radii R > 1 m, it is recommended to use the stitching technique on a highly coherent Zygo Verifire 4 interferometer, which provides a complete surface map. For surfaces with curvature radii R < 1 m, only the stitching technique on a SuperView W1 white light interferometer is suitable. For particularly important measurements, it is advisable to use both methods to achieve maximum measurement accuracy. The results of the study confirm the effectiveness of the proposed approaches in the field of interference metrological control.
About the authors
A. D. Akhsakhalyan
Institute of Physics of Microstructures RAS — Branch of the Federal Research Center “A.V. Gaponov-Grekhov Institute of Applied Physics RAS”Nizhny Novgorod, Russia
M. S. Mikhailenko
Institute of Physics of Microstructures RAS — Branch of the Federal Research Center “A.V. Gaponov-Grekhov Institute of Applied Physics RAS”
Email: mikhaylenko@ipmras.ru
Nizhny Novgorod, Russia
A. E. Pestov
Institute of Physics of Microstructures RAS — Branch of the Federal Research Center “A.V. Gaponov-Grekhov Institute of Applied Physics RAS”Nizhny Novgorod, Russia
E. V. Petrakov
Institute of Physics of Microstructures RAS — Branch of the Federal Research Center “A.V. Gaponov-Grekhov Institute of Applied Physics RAS”Nizhny Novgorod, Russia
E. I. Glushkov
Institute of Physics of Microstructures RAS — Branch of the Federal Research Center “A.V. Gaponov-Grekhov Institute of Applied Physics RAS”Nizhny Novgorod, Russia
A. K. Chernyshev
Institute of Physics of Microstructures RAS — Branch of the Federal Research Center “A.V. Gaponov-Grekhov Institute of Applied Physics RAS”Nizhny Novgorod, Russia
N. I. Chkhalo
Institute of Physics of Microstructures RAS — Branch of the Federal Research Center “A.V. Gaponov-Grekhov Institute of Applied Physics RAS”Nizhny Novgorod, Russia
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