Abstract

A method for the preparation and mounting of thin aluminum oxide films from ordinary household aluminum foil is described. Free films covering a circular area of 3.3 cm² and as thin as 250 A were mounted on glass rings. Infrared reflectance and transmission measurements show that there is absorption beyond 11 microns for even the thinnest films.

© 1955 Optical Society of America

On the Preparation of Hard Oxide Films with Precisely Controlled Thickness on Evaporated Aluminum Mirrors*

Georg Hass
J. Opt. Soc. Am. 39(7) 532-540 (1949)

Evaluation and Analysis of Optical and Electrical Constants of Thin Films as Functions of Reflectance and Transmission Data by Electronic Digital Computation*

Louis Harris and Arthur L. Loeb
J. Opt. Soc. Am. 45(3) 179-188 (1955)

Anodically Produced Multiple Oxide Films for Increasing the Reflectance of Evaporated Aluminum*

Georg Hass and Alan P. Bradford
J. Opt. Soc. Am. 44(10) 810-815 (1954)

Filmed Surfaces for Reflecting Optics*

Georg Hass
J. Opt. Soc. Am. 45(11) 945-952 (1955)

Infrared Reflectance of Evaporated Aluminum Films

H. E. Bennett, Jean M. Bennett, and E. J. Ashley
J. Opt. Soc. Am. 52(11) 1245-1250 (1962)