19 February 2014 An all-dielectric broadband high-transmission efficiency circular polarizer
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We investigated numerically an all-dielectric semiconductor-based circular polarizer consisting of silicon helix on glass substrate. Only three turns of the dielectric helix structure provides extremely high polarization suppression ratio above 2,300:1 with almost 100% transmission. Transmission efficiency greater than 85% for one circularly polarized light is maintained for incident angles as high as 300. The influence of the various helix lattice parameters on the polarization gap and the circular dichroism is also presented.
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Arvinder Singh Chadha, Arvinder Singh Chadha, Deyin Zhao, Deyin Zhao, Weidong Zhou, Weidong Zhou, "An all-dielectric broadband high-transmission efficiency circular polarizer", Proc. SPIE 8994, Photonic and Phononic Properties of Engineered Nanostructures IV, 89941M (19 February 2014); doi: 10.1117/12.2040295; https://doi.org/10.1117/12.2040295

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