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A Tunable Dispersion‐Free Terahertz Metadevice with Pancharatnam–Berry‐Phase‐Enabled Modulation and Polarization Control
Author(s) -
Cong Longqing,
Xu Ningning,
Han Jiaguang,
Zhang Weili,
Singh Ranjan
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201502716
Subject(s) - polarization (electrochemistry) , geometric phase , broadband , materials science , terahertz radiation , free space , phase modulation , optoelectronics , optics , physics , phase noise , quantum mechanics , chemistry
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.