A Tunable Dispersion‐Free Terahertz Metadevice with Pancharatnam–Berry‐Phase‐Enabled Modulation and Polarization Control

Publisher： John Wiley & Sons Inc

E-ISSN： 1521-4095|27|42|6630-6636

ISSN： 0935-9648

Source： ADVANCED MATERIALS, Vol.27, Iss.42, 2015-11, pp. : 6630-6636

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Abstract

It is extremely challenging to control the phase of light at will in free space. Here, Pancharatnam–Berry‐phase‐enabled, tunable phase control of free‐space light is experimentally demonstrated in an ultrathin flexible dispersion‐free metadevice. This metadevice enables the broadband conversion of linearly polarized light into any desired output polarization.

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