Email this article Stable Multilayer Reflective Coatings for λ(HeI) = 58.4 nm for the KORTES Solar Telescope
- Authors: Polkovnikov V.N.1, Chkhalo N.I.1, Meltchakov E.2, Delmotte F.2, Zuev S.Y.1, Salashchenko N.N.1, Svechnikov M.V.1, Tsybin N.N.1
-
Affiliations:
- Institute for Physics of Microstructures, Russian Academy of Sciences
- Laboratoire Charles Fabry, Institut d’Optique Graduate School, CNRS, Université Paris-Saclay
- Issue: Vol 45, No 2 (2019)
- Pages: 85-88
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/208200
- DOI: https://doi.org/10.1134/S1063785019020147
- ID: 208200
Cite item
Open Access
Access granted
Subscription Access
Abstract
Multilayer aluminum-based structures reflecting at λ(HeI) = 58.4 nm were studied. Spectral and angular dependences of the reflection coefficient of these coatings were determined using a laboratory reflectometer and at the ELETTRA and BESSY II synchrotrons. The optical characteristics of multilayer Ru/Al and Mo/Al mirrors with a protective MoSi2 layer were found to be stable: the absolute change in the reflection coefficient within 18 months of storage in air was no larger than 1.5%. The peak near-normal reflection coefficient for Mo/Al mirrors at 58.4 nm was R = 26.1% with FWHM Δλ0.5 = 10 nm of the reflection curve.
About the authors
V. N. Polkovnikov
Institute for Physics of Microstructures, Russian Academy of Sciences
Email: tsybin@ipm.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603087
N. I. Chkhalo
Institute for Physics of Microstructures, Russian Academy of Sciences
Email: tsybin@ipm.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603087
E. Meltchakov
Laboratoire Charles Fabry, Institut d’Optique Graduate School,CNRS, Université Paris-Saclay
Email: tsybin@ipm.sci-nnov.ru
France, Palaiseau Cedex, 91128
F. Delmotte
Laboratoire Charles Fabry, Institut d’Optique Graduate School,CNRS, Université Paris-Saclay
Email: tsybin@ipm.sci-nnov.ru
France, Palaiseau Cedex, 91128
S. Yu. Zuev
Institute for Physics of Microstructures, Russian Academy of Sciences
Email: tsybin@ipm.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603087
N. N. Salashchenko
Institute for Physics of Microstructures, Russian Academy of Sciences
Email: tsybin@ipm.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603087
M. V. Svechnikov
Institute for Physics of Microstructures, Russian Academy of Sciences
Email: tsybin@ipm.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603087
N. N. Tsybin
Institute for Physics of Microstructures, Russian Academy of Sciences
Author for correspondence.
Email: tsybin@ipm.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603087
Supplementary files
