Mid-infrared Fano resonance in heavily doped silicon and metallic nanostructures due to coupling of Wood-Rayleigh anomaly and surface plasmons

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F17%3A10237615" target="_blank" >RIV/61989100:27640/17:10237615 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27740/17:10237615

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1361-6463/aa69aa" target="_blank" >http://dx.doi.org/10.1088/1361-6463/aa69aa</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6463/aa69aa" target="_blank" >10.1088/1361-6463/aa69aa</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mid-infrared Fano resonance in heavily doped silicon and metallic nanostructures due to coupling of Wood-Rayleigh anomaly and surface plasmons

Popis výsledku v původním jazyce

This study reports the design and analysis of a plasmonic sensor based on a heavily doped silicon and metallic grating structure working in the mid-infrared region. The numerical results show that the reflection spectrum of the phosphorous-doped Si grating structure with a dopant concentration of 1 x 20(20) has a sharp asymmetric Fano resonance dip, which is strongly dependent on the refractive index change in the surroundings. It yields a sensitivity of 8000 nm/RIU (refractive index unit) and 950 nm/RIU working in the air and water media, respectively, very high values compared with that of existing devices. Moreover, the Fano resonance caused by coupling of the Wood-Rayleigh anomaly and surface plasmon resonances is demonstrated by calculating the magnetic field and Poynting vector patterns. Further, a feasible and easy fabrication process of the sensor featuring high performance is represented.

Název v anglickém jazyce

Mid-infrared Fano resonance in heavily doped silicon and metallic nanostructures due to coupling of Wood-Rayleigh anomaly and surface plasmons

Popis výsledku anglicky

This study reports the design and analysis of a plasmonic sensor based on a heavily doped silicon and metallic grating structure working in the mid-infrared region. The numerical results show that the reflection spectrum of the phosphorous-doped Si grating structure with a dopant concentration of 1 x 20(20) has a sharp asymmetric Fano resonance dip, which is strongly dependent on the refractive index change in the surroundings. It yields a sensitivity of 8000 nm/RIU (refractive index unit) and 950 nm/RIU working in the air and water media, respectively, very high values compared with that of existing devices. Moreover, the Fano resonance caused by coupling of the Wood-Rayleigh anomaly and surface plasmon resonances is demonstrated by calculating the magnetic field and Poynting vector patterns. Further, a feasible and easy fabrication process of the sensor featuring high performance is represented.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics. D, Applied Physics

ISSN

0022-3727

e-ISSN

—

Svazek periodika

50

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000400119600004

EID výsledku v databázi Scopus

2-s2.0-85019071302