Non-polarizing beam splitter designH. J. Qi, J. D. Shao, R. J. Hong, K. Yi and Z. X. Fan
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences Shanghai 201800, PRC
(Received 13 January 2004; accepted in final form 23 June 2004)
In this paper a non-polarizing beam splitter design concept is presented using anisotropic thin films. Transmittance of s- and p-polarized waves can be dealt with separately. This concept can be applied to non-polarizing beam splitter designs of single wavelength and broad-band spectrum at oblique incidence. A few examples of non-polarizing beam splitters ( 50:50) at the design wavelength of 1064 and over the visible spectrum (420 -680 ) are elaborated. Besides, the angular performance of these designs is examined.
78.20.Fm - Birefringence.
77.22.Ej - Polarization and depolarization.
77.55.+f - Dielectric thin films.
© EDP Sciences 2004