Micaceous Biotite as Efficient Brewster Angle Polarizer for Vacuum Ultraviolet
- 1 July 1966
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 37 (7), 922-924
- https://doi.org/10.1063/1.1720365
Abstract
A naturally occurring, iron rich silicate mineral commonly known as biotite has been found to perform very well as a Brewster angle reflection polarizer in the region 1100 Å to nearly 6000 Å. This observed behavior is somewhat anomalous since it is well-known that nonabsorbing dielectric surfaces which polarize well in Brewster angle reflection have low reflectivity whereas the light reflected from highly reflecting surfaces has a low polarization. In contrast to this, we have found biotite to have a rather high reflectivity with strong polarization of the reflected light. The characteristics of this polarizer are reported in this paper and the apparent anomaly is resolved in terms of an optical anisotropy hitherto disregarded in this context.Keywords
This publication has 4 references indexed in Scilit:
- Pile-of-Plates Polarizer for the Vacuum UltravioletApplied Optics, 1964
- Magnesium Fluoride Polarizing Prism for the Vacuum UltravioletReview of Scientific Instruments, 1964
- The Color and Electronic Configurations of Prussian BlueInorganic Chemistry, 1962
- Metallic Reflection from Molecular CrystalsReviews of Modern Physics, 1960