Stack of cellular lamellae forms a silvered cortex to conceal the opaque organ in a transparent gastropod in epipelagic habitat [PDF]
PeerJ, 2022 Background Gelatinous zooplankton in epipelagic environments often have highly transparent bodies to avoid detection by their visual predators and prey; however, the digestive systems are often exceptionally opaque even in these organisms.
Daisuke Sakai +3 more
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Manufacturing Anti-Reflective Subwavelength Structures on ZnS Using Femtosecond Laser Bessel Beam with Burst Mode [PDF]
BiomimeticsIncreasing the transmittance of zinc sulfide (ZnS) infrared windows can effectively improve the imaging quality of infrared detection. In this study, an anti-reflective subwavelength structure (ASS) was manufactured on ZnS using a femtosecond burst ...
Haoran Wang +3 more
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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
doaj +1 more source
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
doaj +1 more source
IEEE Access, 2020 Based on the first-order Taylor expansion, an efficient Rigorous Coupled-Wave Analysis (RCWA) for one-dimensional ultrathin periodic structures is proposed in this paper.
Jie Li +8 more
doaj +1 more source
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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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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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
doaj +1 more source
Simulation of Rough Surface of CIGS (CuInGaSe) Solar Cell by RCWA (Rigorous Coupled Wave Analysis) Considering the Incoherency of Light [PDF]
Journal of the Optical Society of Korea, 2014 The surface of semiconductor solar cells, such as a-Si or CIGS (CuInGaSe) solar cells is not flat but textured in the microscopic domain. With textured surfaces, the optical reflectivity of a solar cell is different from that of flat surfaces in the wavelength region.
openaire +1 more source
A more efficient rigorous coupled-wave analysis algorithm
, 2006 We present a modification of a well-known mathematical model based on the Rigorous Coupled-Wave Analysis (RCWA) that can be used to solve optical diffraction problems on periodic structures (both 1-D and 2-D gratings with approximated layer-structure ...
Di Bucchianico, A. +4 more
core +2 more sources