Broadband polarization-converting mirror for the visible region of the spectrum
- 15 December 2002
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 27 (24) , 2152-2154
- https://doi.org/10.1364/ol.27.002152
Abstract
A mirror structure that enables the polarization of linearly polarized light to be rotated by 90° over the entire visible region of the spectrum is presented. Theoretical modeling is used to show that this phenomenon occurs for light that is normally incident upon a metal grating consisting of a series of high and narrow ridges that are oriented at 45° to the polarization angle. This broad polarization-conversion band is shown to arise from mode mixing of surface plasmon polariton-mediated polarization-conversion bands and interference-mediated polarization-conversion bands.Keywords
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