OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 46, Iss. 12 — Dec. 1, 1956
  • pp: 1009–1012

Reflectance of Evaporated Aluminum in the Vacuum Ultraviolet

G. HASS, W. R. HUNTER, and R. TOUSEY  »View Author Affiliations


JOSA, Vol. 46, Issue 12, pp. 1009-1012 (1956)
http://dx.doi.org/10.1364/JOSA.46.001009


View Full Text Article

Acrobat PDF (497 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The effect of speed of evaporation, pressure, thickness, and age on the reflectance of evaporated Al films was investigated in the extreme ultraviolet from 900 A to 2200 A. High speed of evaporation was found to be the most important factor in producing Al films of highest ultraviolet reflectance. By changing the evaporation time required to produce an 800 A thick coating from 2 sec to 130 sec at a pressure of 1×10-5 mm Hg, the reflectance is reduced from 90% to 67% at 2000 A, from 74% to 50% at 1600 A, and from 38% to 30% at 1200 A. For films produced at higher pressures such as 1×10-4 mm Hg the effect of evaporation speed on the reflectance is even more pronounced. Film thickness has very little effect on the reflectance as long as films are not thinner than 400–500 A and not thicker than 2000 A. The effect of aging on the reflectance increases strongly with decreasing wavelength. Between 2 hr and 1 month exposure to air the reflectance of good Al films decreases from 91.5% to 90.0% at 2200 A, from 75% to 69% at 1600 A, and from 44% to 27% at 1200 A.

© 1956 Optical Society of America

Citation
G. HASS, W. R. HUNTER, and R. TOUSEY, "Reflectance of Evaporated Aluminum in the Vacuum Ultraviolet," J. Opt. Soc. Am. 46, 1009-1012 (1956)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-46-12-1009


Sort:  Author  |  Journal  |  Reset

References

  1. G. B. Sabine, Phys. Rev. 55, 1064 (1939).
  2. G. Hass, J. Opt. Soc. Am. 45, 945 (1955).
  3. Tousey, Johnson, Richardson, and Toran, J. Opt. Soc. Am. 41, 696 (1951).
  4. Johnson, Watanabe, and Tousey, J. Opt. Soc. Am. 41, 702 (1951).
  5. G. Hass, Z. Anorg. u. allgem. Chem. 254, 96 (1947).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited