Highly efficient birefringent quarter-wave plate based on all-dielectric metasurface and graphene
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.03.018
Abstract: Abstract All-dielectric metasurfaces offer remarkable properties including high efficiency and flexible control of the optical response. However, extreme, narrow bandwidth is a limitation that lowers applicability of these structures in photonic sensing applications. In this… read more here.
Keywords: graphene; wave plate; dielectric metasurface; quarter wave ... See more keywords
Non-quarter-wave dielectric mirror prepared by thermal atomic layer deposition
Sign Up to like & getrecommendations! Published in 2020 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2020.106143
Abstract: Abstract In this work we design and fabricate from n(λ) and k(λ) experimental data for both Al2O3 and TiO2 single layer materials, an optical coating as “dielectric-mirror” following the non-quarter-wave stack formula (HxLy)8Hx. Optical coating… read more here.
Keywords: layer; atomic layer; quarter wave; non quarter ... See more keywords
Quarter-wave plate metasurfaces on electromagnetically thin polyimide substrates
Sign Up to like & getrecommendations! Published in 2019 at "Applied Physics Letters"
DOI: 10.1063/1.5132716
Abstract: We experimentally demonstrate that electromagnetically thin polyimide substrates can mitigate substrate-induced detrimental effects to the performance of metallic metasurfaces. A planar quarter-wave plate for the microwave K-band is fabricated on a polyimide substrate of deep… read more here.
Keywords: electromagnetically thin; wave plate; quarter wave; polyimide substrates ... See more keywords
Birefringence of orthorhombic DyScO3: Toward a terahertz quarter-wave plate
Sign Up to like & getrecommendations! Published in 2021 at "Applied Physics Letters"
DOI: 10.1063/5.0043216
Abstract: With growing interest in exploring fundamental phenomena at terahertz (THz) frequencies, the need for controlling the polarization state of THz radiation is indispensable. However, simple optical elements, such as waveplates that allow creating circularly-polarized THz… read more here.
Keywords: dso crystals; dysco3; thz; quarter wave ... See more keywords
Reconfigurable Terahertz Quarter-Wave Plate for Helicity Switching Based on Babinet Inversion of an Anisotropic Checkerboard Metasurface
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.11.044008
Abstract: Dynamic helicity switching by utilizing metasurfaces is challenging because it requires deep modulation of polarization states. To realize such helicity switching, this paper proposes a dynamic metasurface functioning as a switchable quarter-wave plate, the fast… read more here.
Keywords: metasurface; wave plate; quarter wave; helicity ... See more keywords
Wavelength-Tunable First-Order Narrowband Fiber Comb Filter Incorporating All-Quarter-Wave Polarization Transformation
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2024.3393147
Abstract: In this article, we propose a wavelength-tunable first-order narrowband fiber comb filter that incorporates all-quarter-wave polarization transformation. The proposed filter is composed of a polarization beam splitter to form a polarization-diversified fiber loop, two equally… read more here.
Keywords: filter; narrowband; comb; wavelength ... See more keywords
Design of a superachromatic quarter-wave retarder for near-infrared region using flower pollination algorithm
Sign Up to like & getrecommendations! Published in 2019 at "Optical Engineering"
DOI: 10.1117/1.oe.58.9.095101
Abstract: Abstract. Phase retarders normally exhibit strong wavelength dependence. However, for use with polychromatic light, achromatic retarders, which exhibit ideally nearly identical characteristics over a wide wavelength region, are in demand. Designing such a superachromatic retarder… read more here.
Keywords: pollination algorithm; region; near infrared; quarter wave ... See more keywords
Full polarization states modulating via an ultra-thin quarter-wave plate
Sign Up to like & getrecommendations! Published in 2021 at "European Physical Journal D"
DOI: 10.1140/epjd/s10053-021-00104-9
Abstract: We theoretically and numerically demonstrate a design of an ultra-thin quarter-wave plate (QWP) based on plasmonic metasurface. With the designed QWP, the ellipticity of the output light can be generalized as X $$=$$ 2sin( $$\theta… read more here.
Keywords: ultra thin; thin quarter; wave plate; quarter wave ... See more keywords
Broadband switchable terahertz half-/quarter-wave plate based on metal-VO2 metamaterials.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.406006
Abstract: We propose a metal-vanadium dioxide (VO2) metamaterial with broadband and functionality-switchable polarization conversion in the terahertz regime. Simulation results show that the function of the proposed metamaterial can be switched from a half-wave plate (HWP)… read more here.
Keywords: metal; wave plate; quarter wave; plate ... See more keywords
Quarter-wave Pancharatnam-Berry phase gradient liquid crystal-enabled dual-polarization optical edge detection.
Sign Up to like & getrecommendations! Published in 2024 at "Optics letters"
DOI: 10.1364/ol.525230
Abstract: Here, we present a novel, to the best of our knowledge, optical edge detection scheme that can be operated in both linear and circular polarization modes, leveraging an optical spatial differentiator constructed by quarter-wave Pancharatnam-Berry… read more here.
Keywords: optical edge; edge; edge detection; polarization ... See more keywords
Quarter-Wave Plate Metasurfaces for Generating Multi-Channel Vortex Beams
Sign Up to like & getrecommendations! Published in 2024 at "Nanomaterials"
DOI: 10.3390/nano14040374
Abstract: Metasurfaces of quarter-wave plate (QWP) meta-atoms have exhibited high flexibility and versatile functionalities in the manipulation of light fields. However, the generation of multi-channel vortex beams with the QWP meta-atom metasurfaces presents a significant challenge.… read more here.
Keywords: vortex beams; quarter wave; channel vortex; wave plate ... See more keywords