Surface Plasmon Interference Device as a Source of Near-Field Power for Photoluminescence

Kód výsledku v IS VaVaI

RIV/00216305:26210/22:PU147356 - isvavai.cz

Výsledek na webu

http://przyrbwn.icm.edu.pl/APP/PDF/142/app142z5p17.pdf

DOI - Digital Object Identifier

10.12693/APhysPolA.142.668

Jazyk výsledku

angličtina

Název v původním jazyce

Surface Plasmon Interference Device as a Source of Near-Field Power for Photoluminescence

Popis výsledku v původním jazyce

We theoretically demonstrate that a simple device consisting of an opaque gold layer with subwavelength slits - the so-called surface plasmon interference device - is capable of transforming the far-field optical power to the near-field one. Optimized slits yield a high conversion efficiency amounting to 45% in terms of the near-field to far-field electric intensity ratio. With a single linear slit arrangement, a propagating wave with a homogeneous field distribution is formed, attributed to surface plasmon polaritons based on its polarization properties. On the other hand, with the slit arrangement supporting interference, it is possible to obtain a standing wave with characteristic spatially modulated interference fringes and spatially separate polarization components. A circular slit can be used for focusing the near-field, with the possibility of obtaining a considerably enhanced field with respect to the excitation. We discuss the implication of the enhanced near-field for the near-field excitation of photoluminescence with the capability to bring a spatial resolution of the photoluminescence spectroscopy beyond the diffraction limit. © 2022 Polish Academy of Sciences. All rights reserved.

Název v anglickém jazyce

Surface Plasmon Interference Device as a Source of Near-Field Power for Photoluminescence

Popis výsledku anglicky

We theoretically demonstrate that a simple device consisting of an opaque gold layer with subwavelength slits - the so-called surface plasmon interference device - is capable of transforming the far-field optical power to the near-field one. Optimized slits yield a high conversion efficiency amounting to 45% in terms of the near-field to far-field electric intensity ratio. With a single linear slit arrangement, a propagating wave with a homogeneous field distribution is formed, attributed to surface plasmon polaritons based on its polarization properties. On the other hand, with the slit arrangement supporting interference, it is possible to obtain a standing wave with characteristic spatially modulated interference fringes and spatially separate polarization components. A circular slit can be used for focusing the near-field, with the possibility of obtaining a considerably enhanced field with respect to the excitation. We discuss the implication of the enhanced near-field for the near-field excitation of photoluminescence with the capability to bring a spatial resolution of the photoluminescence spectroscopy beyond the diffraction limit. © 2022 Polish Academy of Sciences. All rights reserved.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

GA19-06621S: Luminiscence vrstevnatých polovodičů v blízkém a dalekém poli

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACTA PHYSICA POLONICA A

ISSN

0587-4246

e-ISSN

1898-794X

Svazek periodika

142

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

5

Strana od-do

668-672

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85145438650