Abstract

Aluminum is anodized in a sulfuric acid solution with a large current density. It is shown for the first time to our knowledge that the aluminum is only partially oxidized in the process and that the alumina thin film containing the residual aluminum acts as a polarizer with a large extinction ratio in the infrared-wavelength region.

© 1990 Optical Society of America

Simple method to fabricate a polarizer with a large aperture by the use of anodic alumina films

Li-Feng Huang and Mitsunobu Miyagi
Appl. Opt. 34(19) 3662-3667 (1995)

Optical waveguides fabricated in anodic alumina films

Mitsunori Saito, Masatoshi Shibasaki, Shinji Nakamura, and Mitsunobu Miyagi
Opt. Lett. 19(10) 710-712 (1994)

Graded index profile of anodic alumina films that is induced by conical pores

Li-Feng Huang, Mitsunori Saito, Mitsunobu Miyagi, and Kenji Wada
Appl. Opt. 32(12) 2039-2044 (1993)

Anisotropic optical loss and birefringence of anodized alumina film

Mitsunori Saito and Mitsunobu Miyagi
J. Opt. Soc. Am. A 6(12) 1895-1900 (1989)

Cube polarizers by the use of metal particles in anodic alumina films

Kuniyoshi Takano, Mitsunori Saito, and Mitsunobu Miyagi
Appl. Opt. 33(16) 3507-3512 (1994)