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Masking of a High-Reflectivity Sphere by a Layer with a Random Quasi-Zero Refractive Index

  • ATOMS, MOLECULES, OPTICS
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Abstract

The method of masking of a large-radius sphere made of an arbitrary material by a masking coating with a random quasi-zero refractive index is substantiated theoretically and experimentally. In this method of masking, the sphere is first coated with a mirror layer (e.g., high-reflectivity silver) and then with a masking layer with a thickness much smaller than the radius of the sphere. The fraction of the external radiation intensity bending around the sphere at the points of observation near the surface of the sphere and the extinction cross section of the sphere with the masking coating for points of observation far away from the sphere are calculated. It is shown that extinction cross section Q of the sphere with a masking coating is much smaller than 2D, where D is the geometrical cross section of the sphere; this corresponds to the masking effect for the sphere in the wavelength range of at least 450–1200 nm in the transparency region of the masking coating.

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Authors and Affiliations

  1. Ul’yanovsk State University, 432017, Ul’yanovsk, Russia

    O. N. Gadomsky & I. A. Shchukarev

  2. Saratov Branch, Kotelnikov Institute of Radio Electronics, Russian Academy of Sciences, 410028, Saratov, Russia

    N. M. Ushakov

  3. Federal State Budget Educational Institution of Higher Education “Kazan National Research Technological University”, 420015, Kazan, Republic of Tatarstan, Russia

    V. E. Katnov

Authors
  1. O. N. Gadomsky
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  2. N. M. Ushakov
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  3. I. A. Shchukarev
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  4. V. E. Katnov
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Corresponding authors

Correspondence to O. N. Gadomsky or I. A. Shchukarev.

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Translated by N. Wadhwa

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Gadomsky, O.N., Ushakov, N.M., Shchukarev, I.A. et al. Masking of a High-Reflectivity Sphere by a Layer with a Random Quasi-Zero Refractive Index. J. Exp. Theor. Phys. 127, 994–1002 (2018). https://doi.org/10.1134/S106377611810014X

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  • DOI: https://doi.org/10.1134/S106377611810014X

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