Abstract

MgF₂-overcoated aluminum films with high-vacuum ultraviolet reflectance have been the subject of further investigations of the preparation parameters affecting their reflectance, and of the effect of aging and exposure to conditions likely to be encountered in their applications. Techniques for monitoring the thickness of MgF₂ by reflectance measurements with ultraviolet light and by complete evaporation of weighed quantities of MgF₂ are described. It is shown that MgF₂-protected aluminum mirrors retain their high-vacuum ultraviolet reflectance during extended exposure to air, ultraviolet irradiation, and bombardment with 1-MeV electrons and 5-MeV protons, and that such mirrors can be easily cleaned if contaminated with oil.

© 1966 Optical Society of America

Further Studies on LiF-Overcoated Aluminum Mirrors with Highest Reflectance in the Vacuum Ultraviolet

J. T. Cox, G. Hass, and J. E. Waylonis
Appl. Opt. 7(8) 1535-1540 (1968)

Effect of Deposition Rate and Substrate Temperature on the Vacuum Ultraviolet Reflectance of MgF₂- and LiF-Overcoated Aluminum Mirrors

E. T. Hutcheson, G. Hass, and J. T. Cox
Appl. Opt. 11(10) 2245-2248 (1972)

Preparation of Mirror Coatings for the Vacuum Ultraviolet in a 2-m Evaporator

A. P. Bradford, G. Hass, J. F. Osantowski, and A. R. Toft
Appl. Opt. 8(6) 1183-1189 (1969)

Proton-Induced Contaminant Film Effects on Ultraviolet Reflecting Mirrors

R. B. Gillette and B. A. Kenyon
Appl. Opt. 10(3) 545-551 (1971)

Reflectance of Aluminum Overcoated with MgF₂ and LiF in the Wavelength Region from 1600 Å to 300 Å at Various Angles of Incidence

W. R. Hunter, J. F. Osantowski, and G. Hass
Appl. Opt. 10(3) 540-544 (1971)