Results 71 to 80 of about 12,122 (206)

Broadband enhancement of light harvesting in luminescent solar concentrator

open access: yes, 2011
Luminescent solar concentrator (LSC) can absorb large-area incident sunlight, then emit luminescence with high quantum efficiency, which finally be collected by a small photovoltaic (PV) system.
Gong, Qihuang   +6 more
core   +1 more source

Computation of the Modes of Elliptic Waveguides with a Curvilinear 2D Frequency-Domain Finite-Difference Approach [PDF]

open access: yes, 2012
A scalar Frequency-Domain Finite-Difference approach to the mode computation of elliptic waveguides is presented. The use of an elliptic cylindrical grid allows us to take exactly into account the curved boundary of the structure and a single mesh has ...
Casula GA   +3 more
core   +1 more source

Recent Advances in Stimulated Brillouin Scattering in Integrated Photonics

open access: yesAdvanced Physics Research, EarlyView.
This review systematically surveys recent advances in stimulated Brillouin scattering (SBS) within integrated photonics. It begins by elucidating the fundamental mechanisms of stimulated coupling between photons and acoustic phonons in nanoscale waveguides, enhanced by the photoelastic and moving boundary effects.
Songyue Liu   +8 more
wiley   +1 more source

A verified equivalent-circuit model for slotwaveguide modulators [PDF]

open access: yes, 2019
We formulate and experimentally validate an equivalent-circuit model based on distributed elements to describe the electric and electro-optic (EO) properties of travellingwave silicon-organic hybrid (SOH) slot-waveguide modulators.
Freude, Wolfgang   +9 more
core   +3 more sources

Halide perovskites in wide‐spectrum photodetection

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Recent advances in perovskite‐based photodetectors (PPDs), phototransistors, and photoconductors are technically discussed in this review. Moreover, the mechanism behind different harvesting processes in perovskite following the energy of photons is explained, where the gamma or x‐rays are ionizing.
Somayeh Gholipour   +5 more
wiley   +1 more source

Guided acoustic and optical waves in silicon-on-insulator for Brillouin scattering and optomechanics

open access: yesAPL Photonics, 2016
We numerically study silicon waveguides on silica showing that it is possible to simultaneously guide optical and acoustic waves in the technologically important silicon on insulator (SOI) material system.
Christopher J. Sarabalis   +2 more
doaj   +1 more source

Introducing the Groundbreaking Design of the First n‐Input AND Gate Using an Optical‐MOSFET With a Revolutionary Structure of Pulse‐Shaped Gates

open access: yesAdvanced Photonics Research, Volume 7, Issue 5, May 2026.
The paper introduces the first logic gate implementation using optical metal–oxide‐semiconductor field‐effect transistor architecture, specifically designing two‐input and three‐input AND gates based on a silicene waveguide with pulse‐shaped gates. The key innovations include: (1) pulse‐shaped gate design.
Hamed Emami‐Nejad, Ali Mir
wiley   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, Volume 36, Issue 27, 2 April 2026.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Hybrid Nonlinear InAs/2D‐Graphene/SiO2 Plasmonic Waveguides at 3.55–4.55 μm Mid‐IR: Optical Characterization and Performance

open access: yesAdvanced Photonics Research, Volume 7, Issue 4, April 2026.
Hybrid non‐linear InAs/2D‐graphene/SiO2 dielectric plasmonic waveguide. Configuration #1 (monolayer 2D‐graphene): a single thin layer of 2D‐graphene (thickness tG = 0.34 nm) centered at mid‐plane of one dielectric silica core (SiO2); typical dimensions are: w = width = 500 nm, h = height = 500 nm, total thickness of bulk semiconductor (InAs), 2 tInAs =
A. B. Traseira Pena   +2 more
wiley   +1 more source

Transparent subdiffraction optics: nanoscale light confinement without metal

open access: yes, 2014
The integration of nanoscale electronics with conventional optical devices is restricted by the diffraction limit of light. Metals can confine light at the subwavelength scales needed, but they are lossy, while dielectric materials do not confine ...
Jacob, Zubin, Jahani, Saman
core   +1 more source

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