Abstract
The reflectance and transmittance of dielectric thin films at oblique angles of incidence have strong polarization effects. For some applications these effects are undesirable. A nonpolarizing beam splitter design concept is shown, which is based on the fact that in a quarter-wave stack at λ0 two effective indices that obey the Brewster condition affect only the spectral performance of the s state at λ0. This property is used as a design tool. The concept can be applied to a wide range of angles and transmittance values, with the use of effective quarter-wave layers of at least three different materials. A few examples are elaborated where these values are designed and optimized to give either Tp = Ts or Tp + Ts = constant, in the vicinity of λ0.
© 1992 Optical Society of America
Full Article | PDF ArticleMore Like This
Jin Hui Shi and Zheng Ping Wang
Appl. Opt. 47(14) 2619-2622 (2008)
Jin Hui Shi, Chun Ying Guan, and Zheng Ping Wang
Appl. Opt. 48(18) 3385-3390 (2009)
Jin Hui Shi and Zheng Ping Wang
Appl. Opt. 47(13) C275-C278 (2008)