Formation of polarized beams in chains of dielectric spheres and cylinders

Arash Darafsheh, Neda Mojaverian, Nicholaos I. Limberopoulos, Kenneth W. Allen, Anatole Lupu, Vasily N. Astratov

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Using numerical modeling, it is shown that chains of dielectric spheres and cylinders act as polarizers. The mechanism is based on gradual filtering of periodically focused modes with a certain polarization propagating with minimal losses due to Brewster angles conditions, whereas orthogonally polarized modes are strongly attenuated. It is shown that chains of cylinders filter linearly polarized beams, whereas chains of spheres filter radially polarized beams. In the geometrical optics limit, we show that in a range of sphere refractive indices 1.68-1.80 a degree of radial polarization in excess of 0.9 can be obtained in 10-sphere-long chains.

Original languageEnglish
Pages (from-to)4208-4211
Number of pages4
JournalOptics Letters
Volume38
Issue number20
DOIs
StatePublished - Oct 15 2013

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