Results 41 to 50 of about 24,104,792 (158)
, 2008 The conical rigorous coupled-wave analysis (RCWA) is employed to calculate the polarization conversion through the excitation of surface plasmons on metallic gratings. Various examples are examined with this numerical scheme.
Tsai, Chang Ching, Wu, Shin Tson
core +2 more sources
Numerical Estimation of Bending in Holographic Volume Gratings by Means of RCWA and Deep Learning
Applied SciencesIn this paper, we introduce a novel approach to model bending phenomena on holographic volume gratings based on Rigorous Coupled Wave Analysis (RCWA), in which the bending as a phase in the dielectric permittivity expansion is introduced, and the ...
Jaume Colomina-Martínez +6 more
doaj +1 more source
Twin‐Lever Multifunctional Meta‐Optics With High Longitudinal Tolerance
Advanced Science, EarlyView.We introduce a single‐layer, CMOS‐compatible metasurface that allows for polarization‐programmable, achromatic broadband dual‐mode imaging with high longitudinal tolerance. The twin‐lever design combines bright‐field focusing and vortex‐based edge‐enhanced imaging while managing axial intensity distribution from 488 to 633 nm.
Isma Javed +10 more
wiley +1 more source
Multiplexed holographic transmission gratings recorded in holographic polymer-dispersed liquid crystals: static and dynamic studies [PDF]
, 2005 The optimization of the experimental parameters of two multiplexed holographic transmission gratings recorded in holographic polymer-dispersed liquid crystals is investigated.
Camacho, Maria +4 more
core +1 more source
Advanced Science, EarlyView.Researchers developed and applied a generative artificial intelligence (AI) model to optimize epsilon‐near‐zero thin film stacks for ultra‐broadband perfect absorption of light. The fabricated AI‐designed absorber, with a total thickness of only 160 nm, experimentally demonstrated an absorption bandwidth exceeding 1000 nm while maintaining greater than
David Dang +10 more
wiley +1 more source
Neptune Wave Power, LLC (‘NWP’), worked with OWET, the Northwest National Marine Renewable Energy Center (‘NNMREC’) and Oregon State University (O.H. Hinsdale Wave Research Laboratory) to build and test a 1/10 scale model wave energy conversion (‘WEC ...
Neptune Wave Power LLC +1 more
core +6 more sources
Tailoring the Optical Transmission Spectra of Double-Layered Compound Metallic Gratings
IEEE Photonics Journal, 2013 The transmission resonance characteristics of a gold double-layered compound grating (DCG) are investigated numerically using the rigorous coupled-wave analysis (RCWA) method. The DCG is assumed to comprise two identical single-layered gratings separated
Nghia Nguyen-Huu, Yu-Lung Lo
doaj +1 more source
Low Threshold Vertical Cavity Surface Emitting Lasers Based on CsPbI3 Thin Films
Advanced Science, EarlyView.The first vertical‐cavity surface‐emitting laser (VCSEL) based on CsPbI3 thin films is fabricated by planar hot pressing. By optimizing the cavity design through optical gain assessment and rigorous coupled‐wave analysis, the VCSEL achieved an exceptionally low lasing threshold of 2.8 µJ cm−2.
Naho Kurahashi +11 more
wiley +1 more source
Advanced Intelligent Systems, EarlyView.Neuro‐evolution can boost machine‐learning optimization of chiral metasurfaces. By integrating the NEAT algorithm into a deep‐learning framework, we enable the efficient design of visible‐spectrum chiroptical responses. NEAT autonomously evolves neural‐network architectures and weights, reducing manual tuning.
Davide Filippozzi, Arash Rahimi‐Iman
wiley +1 more source
Design of broadband reflector at the visible wavelengths using particle swarm optimization
AIP Advances, 2019 We design and theoretically investigate freestanding gallium nitride (GaN) high contrast grating (HCG) membranes as broadband reflectors operating at the visible wavelengths.
Shumin He +3 more
doaj +1 more source