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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 24, Iss. 8 — Apr. 15, 1985
  • pp: 1164–1170

Progress in the development of a durable silver-based high-reflectance coating for astronomical telescopes

Dar-Yuan Song, R. W. Sprague, H. Angus Macleod, and Michael R. Jacobson  »View Author Affiliations


Applied Optics, Vol. 24, Issue 8, pp. 1164-1170 (1985)
http://dx.doi.org/10.1364/AO.24.001164


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Abstract

Silver-based high-reflectance coatings that can withstand the humid and polluted conditions common in the open air have been developed for astronomical telescope optics. The successful designs incorporate a silver reflective layer with a copper underlayer and a stack of dielectric overlayers. Prototypes have been deposited and tested in a controlled environmental chamber and in true operating conditions on Kitt Peak in Arizona. The improved durability, which is due to the copper underlayer, has been investigated with analytical techniques, including Rutherford backscattering.

© 1985 Optical Society of America

History
Original Manuscript: December 10, 1984
Published: April 15, 1985

Citation
Dar-Yuan Song, R. W. Sprague, H. Angus Macleod, and Michael R. Jacobson, "Progress in the development of a durable silver-based high-reflectance coating for astronomical telescopes," Appl. Opt. 24, 1164-1170 (1985)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-24-8-1164


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References

  1. G. Hass, L. Hadley, “Optical Constants of Metals,” in American Institute of Physics Handbook, D. E. Gray, Ed. (McGraw-Hill, New York, 1972), pp. 6-124–6-156.
  2. L. D. Barr, Kitt Peak National Observatory; personal communication.
  3. I. Lubezky, E. Ceren, Z. Klein, “Silver Mirrors Protected with Yttria for the 0.5–14 -μm Region,” Appl. Opt. 19, 1895 (1980). [CrossRef] [PubMed]
  4. V. M. Dubkov, V. N. Rozhdestvenskii, “Protecting Reflecting Layers of Copper and Silver Against Tarnishing,” Sov. J. Opt. Technol. 50, 35 (1983).
  5. S. D. Browning, M. R. Jacobson, H. A. Macleod, R. H. Potoff, D. Y. Song, F. van Milligen, “Development of High Reflectance Coatings for Ground-Based Astronomical Instruments,” Proc. Soc. Photo-Opt. Instrum. Eng. 332, 310 (1982).
  6. P. J. Martin, H. A. Macleod, R. P. Netterfield, C. G. Pacey, W. G. Sainty, “Ion-Beam-Assisted Deposition of Thin Films,” Appl. Opt. 22, 178 (1983). [CrossRef] [PubMed]
  7. D. V. Keller, “Adhesion Between Solid Metals,” Wear 6, 353 (1963). [CrossRef]
  8. J. L. Stanford, H. E. Bennett, “Enhancement of Surface Plasma Resonance Absorption in Mirrors by Overcoating with Dielectrics,” Appl. Opt. 8, 2556 (1969). [CrossRef] [PubMed]

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