title: A Tunable Dispersion-Free Terahertz Metadevice with Pancharatnam-Berry-Phase-Enabled Modulation and Polarization Control.
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.
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.|Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Longqing
authors.initials: L
authors.lastname: Cong
authors.affiliation: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK, 87078, USA.
authors.forename: Ningning
authors.initials: N
authors.lastname: Xu
authors.affiliation: Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, 300072, P. R. China.
authors.forename: Jiaguang
authors.initials: J
authors.lastname: Han
authors.affiliation: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK, 87078, USA.
authors.forename: Weili
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.|Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Ranjan
authors.initials: R
authors.lastname: Singh
keywords: Pancharatnam-Berry phase; phase modulation; terahertz metamaterial devices; tunable polarization control