Chinese Optics Letters, Vol. 6, Issue 7, 544 (2008)
Wideband film polarizer design
Xiaoyong Fu1,2,*, Kui Yi1, Jianda Shao1, and Zhengxiu Fan1
- 1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
- 2Graduate University of Chinese Academy of Sciences, Beijing 100049
The reflection and transmittance of s- and p-polarized lights should be treated separately at nonzero angle incidence. By choosing two special film materials whose refractive indices meet the Brewster condition in a given incident angle, the reflection of p-polarized light can be eliminated. When the two materials are fabricated into multilayer stacks, the reflection of s-polarized light can be largely increased while the reflection of p-polarized light keeps low. According to this principle, a film polarizer with bandwidth of 198 nm or even more is designed.