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Broadband Linear-to-Circular Polarization Conversion Enabled by Birefringent Off-Resonance Reflective Metasurfaces

Journal Article · · Physical Review Letters
 [1];  [2];  [1];  [3];  [2];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)
  2. Stanford Univ., CA (United States). E.L. Ginzton Lab.
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Due to the scarcity of circular polarization light sources, linear-to-circular polarization conversion is required to generate circularly polarized light for a variety of applications. Despite significant past efforts, broadband linear-to-circular polarization conversion remains elusive particularly in the terahertz and midinfrared frequency ranges. Here we propose a novel mechanism based on coupled mode theory, and experimentally demonstrate at terahertz frequencies that highly efficient (power conversion efficiency approaching unity) and ultrabroadband (fractional bandwidth up to 80%) linear-to-circular polarization conversion can be accomplished by the judicious design of birefringent metasurfaces. The underlying mechanism operates in the frequency range between well separated resonances, and relies upon the phase response of these resonances away from the resonant frequencies, as well as the balance of the resonant and nonresonant channels. This mechanism is applicable for any operating frequencies from microwave to visible. The present Letter potentially opens a wide range of opportunities in wireless communications, spectroscopy, and emergent quantum materials research where circularly polarized light is desired.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
89233218CNA000001; FG02-07ER46426
OSTI ID:
1739962
Report Number(s):
LA-UR--18-31108
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 23 Vol. 123; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (43)

Highly flexible broadband terahertz metamaterial quarter-wave plate: Highly flexible broadband terahertz metamaterial quarter-wave plate journal March 2014
Achromatic combinations of birefringent plates: Part II. An achromatic quarter-wave plate journal April 1955
Bilayer Metasurfaces for Dual- and Broadband Optical Antireflection journal August 2017
Applications of the photoelastic modulator to polarization spectroscopy journal March 1979
A Broadband, Background-Free Quarter-Wave Plate Based on Plasmonic Metasurfaces journal February 2012
Twisted optical metamaterials for planarized ultrathin broadband circular polarizers journal January 2012
Generation and electric control of spin–valley-coupled circular photogalvanic current in WSe2 journal September 2014
A biological quarter-wave retarder with excellent achromaticity in the visible wavelength region journal October 2009
Direct optical detection of Weyl fermion chirality in a topological semimetal journal May 2017
Security and eavesdropping in terahertz wireless links journal October 2018
Broadband detection capability of ZnTe electro‐optic field detectors journal May 1996
Impact of resonator geometry and its coupling with ground plane on ultrathin metamaterial perfect absorbers journal September 2012
Invited Article: Narrowband terahertz bandpass filters employing stacked bilayer metasurface antireflection structures journal May 2018
A review of metasurfaces: physics and applications journal June 2016
Terahertz Circular Dichroism Spectroscopy: A Potential Approach to the In Situ Detection of Life's Metabolic and Genetic Machinery journal September 2003
Optical Constants of the Noble Metals journal December 1972
Antireflection Coating Using Metamaterials and Identification of Its Mechanism journal August 2010
All-Optical Magnetic Recording with Circularly Polarized Light journal July 2007
Manipulating Electromagnetic Wave Polarizations by Anisotropic Metamaterials journal August 2007
Controlling the Polarization State of Light with a Dispersion-Free Metastructure journal May 2014
Widely Tunable Terahertz Phase Modulation with Gate-Controlled Graphene Metasurfaces journal November 2015
Temporal coupled-mode theory and the presence of non-orthogonal modes in lossless multimode cavities journal October 2004
Permittivity and Loss Characterization of SU-8 Films for mmW and Terahertz Applications journal January 2015
Crossed Dipole Antennas: A review. journal October 2015
Gold Helix Photonic Metamaterial as Broadband Circular Polarizer journal August 2009
Terahertz Metamaterials for Linear Polarization Conversion and Anomalous Refraction journal May 2013
Circular Dichroism of Biological Macromolecules journal December 1966
Optical properties of fourteen metals in the infrared and far infrared: Al, Co, Cu, Au, Fe, Pb, Mo, Ni, Pd, Pt, Ag, Ti, V, and W journal January 1985
Achromatic quarter-wave plates using the dispersion of form birefringence journal January 1997
Backscattering target detection in a turbid medium by polarization discrimination journal January 1999
Interspecimen Comparison of the Refractive Index of Fused Silica*,† journal January 1965
Temporal coupled-mode theory for the Fano resonance in optical resonators journal January 2003
Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors journal January 1990
Comparison of birefringent electric split-ring resonator and meanderline structures as quarter-wave plates at terahertz frequencies journal December 2008
Metamaterials for THz polarimetric devices journal January 2009
Interference theory of metamaterial perfect absorbers journal January 2012
Efficient and broadband quarter-wave plates by gap-plasmon resonators journal January 2013
Dielectric-resonator metasurfaces for broadband terahertz quarter- and half-wave mirrors journal January 2018
Broadband form birefringent quarter-wave plate for the mid-infrared wavelength region journal January 1999
Terahertz achromatic quarter-wave plate journal January 2006
Achromatic prism-type wave plate for broadband terahertz pulses journal January 2014
Ultra-wideband metasurface with linear-to-circular polarization conversion of an electromagnetic wave journal January 2018
Polarization-Division Interferometry: Far-Infrared Dichroism journal November 1994