About: Plasmonically enhanced mid-IR light source based on tunable spectrally and directionally selective thermal emission from nanopatterned graphene

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Plasmonically enhanced mid-IR light source based on tunable spectrally and directionally selective thermal emission from nanopatterned graphene Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Plasmonically enhanced mid-IR light source based on tunable spectrally and directionally selective thermal emission from nanopatterned graphene
Creator	Waqas, Muhammad Leuenberger, Michael
source	ArXiv
abstract	We present a proof of concept for a spectrally selective thermal mid-IR source based on nanopatterned graphene (NPG) with a typical mobility of CVD-grown graphene (up to $3000$ cm$^2$V$^{-1}$s$^{-1}$), ensuring scalability to large areas. For that, we solve the electrostatic problem of a conducting hyperboloid with an elliptical wormhole in the presence of an in-plane electric field. The localized surface plasmons (LSPs) on the NPG sheet allow for the control and tuning of the thermal emission spectrum in the wavelength regime from 3 $/mu$m to 12 $/mu$m. The LSPs along with an optical cavity increase the emittance of graphene from about 2.3% for pristine graphene to 80% for NPG, thereby outperforming state-of-the-art pristine graphene light sources operating in the near-infrared (NIR) by a factor of 100. A maximum emission power per area of 11x10^3 W/m$^2$ at $T=2000$ K for a bias voltage of $V=23$ V is achieved by Joule heating. By generalizing Planck's theory and considering the nonlocal fluctuation-dissipation theorem with nonlocal response of surface plasmons in graphene in RPA, we show that the coherence length of the graphene plasmons and the thermally emitted photons can be as large as 13 $/mu$m and 150 $/mu$m, respectively, providing the opportunity to create phased arrays. The spatial phase variation of the coherence allows for beamsteering of the thermal emission in the range between $12^/circ$ and $80^/circ$ by tuning the Fermi energy. Our analysis of the nonlocal hydrodynamic response leads to the conjecture that the diffusion length and viscosity in graphene are frequency-dependent. Using finite-difference time domain (FDTD) calculations, coupled mode theory, and RPA, we develop the model of a mid-IR light source based on NPG, which will pave the way to graphene-based optical mid-IR communication, mid-IR color displays, mid-IR spectroscopy, and virus detection.
has issue date	2020-05-19(xsd:dateTime)
has license	arxiv
sha1sum (hex)	bc70846bc89471a3a161bab2976bcf900e365e74
resource representing a document's title	Plasmonically enhanced mid-IR light source based on tunable spectrally and directionally selective thermal emission from nanopatterned graphene
resource representing a document's body	covid:bc70846bc89471a3a161bab2976bcf900e365e74#body_text
is schema:about of	named entity 'opportunity' named entity 'circular' named entity 'graphene' named entity 'graphene' named entity 'emission spectrum' »more»

Faceted Search & Find service v1.13.91 as of Mar 24 2020

Alternative Linked Data Documents: Sponger | ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3229 as of Jul 10 2020, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (94 GB total memory)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2025 OpenLink Software