1 July 1990 Artificial polarization components
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Proceedings Volume 1319, Optics in Complex Systems; (1990) https://doi.org/10.1117/12.22213
Event: 15th International Optics in Complex Systems, 1990, Garmisch, Germany
High frequency surface relief structures are optically anisotropic and show interesting polarisation properties 1 . These properties can be used to produce polarizations components such as wave plates polarizers. polarizing beamsplitters etc. Our experimental results show that even gratings with relatively low spatial frequency ( periods A ) exhibit a strong phase retardation and can be used as quarter-wave plates. k INTRODUC11ON The artificial birefringence exhibited by ultrahigh frequency gratings of dielectric materials can be used to produce various polarization components2 . Such components have applications in integrated optics as well as in free space optics. In order to produce the high spatial frequencies complex processes such as electron-beam lithography and reactive ion etching are needed. We show in this paper that sinusoidal holographic gratings in photoresist exhibit also a strong phase ret even at relatively long periods. L EXPERIMENTAL MEASUREMENTS To obtain the phase retardation of a lower frequency ( period A ) grating a simple setup as used by Enger and 2 can be applied. In our case however there are three measurements necessary to obtain the phase retardation because transmission of the two perpendicularly polarized beams is different from each other. I GRATING PRODUCTION grating 2 3 4 5 6 7 8 9 period (pmj 0. 74 0. 74 0. 61 0. 54 0. 46 0. 32 0. 54 0. 54 0. 54 ne (sec) 60
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
L. Cescato, L. Cescato, Ekkehard Gluch, Ekkehard Gluch, Wilhelm Stork, Wilhelm Stork, Norbert Streibl, Norbert Streibl, } "Artificial polarization components", Proc. SPIE 1319, Optics in Complex Systems, (1 July 1990); doi: 10.1117/12.22213; https://doi.org/10.1117/12.22213

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