Results 11 to 20 of about 664 (133)
High Efficiency Polarization-Independent Slanted Grating for RGB Bands
IEEE Photonics Journal, 2021 We proposed a slanted grating suitable for RGB bands which is polarization-independent and has a high diffraction efficiency of −1st order under normal incidence.
Ge Jin +5 more
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Effective spectral optical functions of lamellar nanogratings [PDF]
Journal of the European Optical Society-Rapid Publications, 2006 Spectral properties of lamellar sub-wavelength gratings (nanogratings) are described by effective medium approximation (EMA). Analytical spectral formulae for ordinary and extraordinary effective optical functions are derived for nanogratings consisting ...
Foldyna Martin +4 more
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A 1 × 2 Two-Dimensional Slanted Grating Based on Double-Layer Cylindrical Structure
Applied Sciences, 2023 Diffraction gratings play an increasingly important role in various planar optical systems, such as near-eye display systems for virtual reality (VR) and augmented reality (AR). The slanted gratings have more advantages than other elements.
Yuda Chen +5 more
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Two‐dimensional synthetic aperture imaging of targets behind reinforced concrete walls
IET Radar, Sonar & Navigation, 2022 Synthetic aperture imaging of targets closely behind a reinforced concrete wall, modelled by a periodic structure by using the proper Green's function (GF) of the structure, is studied.
Alireza Ghobadi‐Rad +2 more
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Micromachines, 2022 Electromagnetic (EM) absorbers and emitters have attracted much interest because of their versatile applications. A photonic heterostructure composed of silicon carbide (SiC) layer/germanium (Ge) cavity/distributed Bragg reflector (DBR) has been proposed.
Chengxuan Gong, Gaige Zheng
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Numerical Modeling of Sub-Wavelength Anti-Reflective Structures for Solar Module Applications
Nanomaterials, 2014 This paper reviews the current progress in mathematical modeling of anti-reflective subwavelength structures. Methods covered include effective medium theory (EMT), finite-difference time-domain (FDTD), transfer matrix method (TMM), the Fourier modal ...
Katherine Han, Chih-Hung Chang
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Zoological Letters, 2017 Background Tunic is a cellulosic, integumentary matrix found in tunicates (Subphylum Tunicata or Urochordata). The tunics of some ascidian species and pelagic tunicates, such as salps, are nearly transparent, which is useful in predator avoidance ...
Hiroshi Kakiuchida +3 more
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Freestanding Polymer Metasurface Supporting Higher-Order Optical Resonances for Strong Field Enhancement in TMD Monolayers. [PDF]
SmallA freestanding polymer metasurface is developed to enhance light emission from atomically thin semiconductors. By supporting higher‐order optical resonances that concentrate electromagnetic fields at the surface, the platform significantly improves coupling between light and WS2 monolayer.
Deng CZ +10 more
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A Theoretical Description of Node-Aligned Resonant Waveguide Gratings
Optics, 2022 Waveguide gratings are used for applications such as guided-mode resonance filters and fiber-to-chip couplers. A waveguide grating typically consists of a stack of a single-mode slab waveguide and a grating. The filling factor of the grating with respect
Maik Meudt +3 more
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Micromachines, 2022 A kind of ultra-thin transmissive color filter based on a metal-semiconductor-metal (MSM) structure is proposed. The displayed color can cover the entire visible range and switches after H2 treatment. An indium gallium zinc oxide (IGZO) semiconductor was
Xiangrui Fan +3 more
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