Results 11 to 20 of about 24,164 (268)

Plasmon drag effect with sharp polarity switching

open access: yesNew Journal of Physics, 2020
The generation of significant photocurrents observed in plasmonic metasurfaces is interesting from a fundamental point of view and promising for applications in plasmon-based electronics and plasmonic sensors with compact electrical detection.
T Ronurpraful, D Keene, N Noginova
doaj   +1 more source

Polymer-Based High Diffraction Efficiency and High Resolution Volume Holographic Transmission Gratings

open access: yesChemosensors, 2022
We report on the optical characterization of very high-efficiency and high-resolution holographic volume phase transmission gratings. The gratings are recorded in a new photo-polymerizable mixture made by epoxy-resin and multi-acrylate.
Riccardo Castagna   +3 more
doaj   +1 more source

The Optimum-efficiency Beam Multiplier for an Arbitrary Number of Output Beams and Power Distribution

open access: yesJournal of Telecommunications and Information Technology, 2017
This paper deals with phase gratings working in the paraxial domain. The profile of the optimum-efficiency beam multiplier with an arbitrary number of output diffraction orders is derived in an analytic form by exploiting methods from the calculus of ...
Fabrizio Frezza
doaj   +1 more source

Design of an 845-nm GaAs Vertical-Cavity Silicon-Integrated Laser with an Intracavity Grating for Coupling to a SiN Waveguide Circuit

open access: yesIEEE Photonics Journal, 2017
A short-wavelength hybrid GaAs vertical-cavity silicon-integrated laser (VCSIL) with in-plane waveguide coupling has been designed and optimized using numerical simulations.
Sulakshna Kumari   +6 more
doaj   +1 more source

Silicon Add-Drop Filter Based on Multimode Grating Assisted Couplers

open access: yesIEEE Photonics Journal, 2016
We demonstrate the design, fabrication, and characterization of a two-mode silicon add-drop filter, which is based on multimode grating-assisted contra-directional couplers.
Huiye Qiu   +7 more
doaj   +1 more source

A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded Gratings

open access: yesIEEE Photonics Journal, 2018
In this paper, a novel tunable DBR laser based on novel cascaded gratings is proposed for chirp management in high-speed direct modulation applications. The cascaded gratings, i.e., a tilted $\pi $ phase-shift grating followed by a normal uniform Bragg ...
Yao Zhu   +3 more
doaj   +1 more source

Broadband Absorption in Thin Films Motivated by Strong Light Bending

open access: yesAdvanced Photonics Research, 2021
Photon management toward the absorption over a wide spectral range of the solar light is important to various absorption‐based photonic devices. The key for high absorption in thin films is the ability to “bend the light” from the normal direction into ...
Haim Elisha   +2 more
doaj   +1 more source

Analysis by Asymptotic Boundary Conditions of Strip-Grated Dielectric Pipe Over Dielectric Rod With Wide Total Band-Gap as Multifrequency Cylindrical Leaky-Wave Antennas

open access: yesIEEE Access, 2022
In this paper, the method of classical vector potential analysis along with the asymptotic strips boundary conditions (ASBC) is used to treat conducting strip grated dielectric pipes wrapped over core dielectric cylindrical rods.
Malcolm Ng Mou Kehn, Cheng-Yu Wu
doaj   +1 more source

Efficient Light Trapping in Organic Solar Cell Using a Short-Pitched Hexagonal Array of Metallic Nanocylinders

open access: yesIEEE Photonics Journal, 2016
Plasmonic nanostructures have a great potential for enhancing light absorption of organic solar cells (OSCs). Our previous work has demonstrated that light absorption for OSCs with thin active layer can be significantly increased with a 1-D short-pitched
Wenyan Wang   +6 more
doaj   +1 more source

A Method to Improve Mounting Tolerance of Open-Type Optical Linear Encoder

open access: yesSensors, 2023
Accuracy becomes progressively important in the wake of development in advanced industrial equipment. A key position sensor to such a quest is the optical linear encoder.
Xinji Lu   +3 more
doaj   +1 more source

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