Results 21 to 30 of about 807 (172)

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, Postava Kamil, Ossikovski Razvigor, De Martino Antonello, Garcia-Caurel Enric   +4 more
doaj   +1 more source

Calculation of the Localized Surface Plasmon Resonances of Au Nanoparticles Embedded in NiO

Solids, 2022
The present article examined the influence of size and periodicity of simulated gold (Au) nanoparticles (NPs) embedded in Nickel Oxide (NiO) matrix on localized plasmonic resonances (LSPRs).
Maria Tsarmpopoulou, Alexandros G. Chronis, Mihail Sigalas, Alkeos Stamatelatos, Panagiotis Poulopoulos, Spyridon Grammatikopoulos   +5 more
doaj   +1 more source

Diffraction Grating Theory with RCWA or the C Method [PDF]

, 2006
Diffraction gratings are often used in optical metrology. When an electromagnetic wave is incident on a grating, the periodicity of the grating causes a multiplicity of diffraction orders. In many metrology applications one needs to know the diffraction efficiency of these orders. Since the period of a grating is often of the same order of magnitude as
openaire   +3 more sources

Rigorous coupled-wave analysis of absorption enhancement in vertically illuminated silicon photodiodes with photon-trapping hole arrays

Nanophotonics, 2019
In this paper, we present a rigorous coupled-wave analysis (RCWA) of absorption enhancement in all-silicon (Si) photodiodes with integrated hole arrays of different shapes and dimensions.
Gou Jun, Cansizoglu Hilal, Bartolo-Perez Cesar, Ghandiparsi Soroush, Mayet Ahmed S., Rabiee-Golgir Hossein, Gao Yang, Wang Jun, Yamada Toshishige, Devine Ekaterina Ponizovskaya, Elrefaie Aly F., Wang Shih-Yuan, Islam M. Saif   +12 more
doaj   +1 more source

Ultra-Thin and Lithography-Free Transmissive Color Filter Based on Doped Indium Gallium Zinc Oxide with High Performance

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, Shengyao Wang, Dongdong Xu, Gaige Zheng   +3 more
doaj   +1 more source

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, Andreas Henkel, Maximilian Buchmüller, Patrick Görrn   +3 more
doaj   +1 more source

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

Analysis and Prediction of Image Quality Degradation Caused by Diffraction of Infrared Optical System Turning Marks

Photonics, 2023
This paper addresses the issue of reduced image quality due to annular turning marks formed by single-point diamond turning (SPDT) during the processing of metal-based mirrors and infrared lenses.
Haokun Ye, Jianping Zhang, Shangnan Zhao, Mingxin Liu, Xin Zhang   +4 more
doaj   +1 more source

Single Chip-Based Nano-Optomechanical Accelerometer Based on Subwavelength Grating Pair and Rotated Serpentine Springs

Sensors, 2018
Optical coupling between subwavelength grating pairs allows for the precise measurement of lateral or vertical displacement of grating elements and gives rise to different types of displacement and inertial sensors. In this paper, we demonstrate a design
Qianbo Lu, Jian Bai, Kaiwei Wang, Peiwen Chen, Weidong Fang, Chen Wang   +5 more
doaj   +1 more source

Rigorous Coupled-Wave Analysis Algorithm for Stratified Two-Dimensional Gratings with Unconditionally Stable H-Matrix Methods

Photonics
Nanostructures with the two-dimensional (2D) periodicity are attracting increasing attention due to their promising applications in planar optical devices and their potential for scalable industrial production. While Rigorous Coupled-Wave Analysis (RCWA)
Kaixuan Song, Jiyong Wang, Gaofeng Wang
doaj   +1 more source