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Effect of Mirror Characteristics on Critical Coupling in Plasmonic Nanostructures

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Title Effect of Mirror Characteristics on Critical Coupling in Plasmonic Nanostructures
 
Creator L M, Jagathpriya
Dutta-Gupta, Shourya
 
Subject Plasmonics
Gold nanoparticles
Critical coupling
Perfect absorption
 
Description 535-540
Plasmonic nanostructures have been used in various non-destructive sensing and modulation applications. The efficiency of
plasmonic structures can be tuned by controlling their net optical absorption and near-field enhancement. In the current
study, we numerically investigate the effect of mirror characteristics on absorption and near-field enhancement in critically
coupled plasmonic structures. We explore structures with metallic mirrors and dielectric Bragg reflectors (DBR) and show
that the optical response can be enhanced by a judicious choice of spacer thickness and operating wavelength. The results
presented in this study provide a roadmap for designing plasmonic substrates with enhanced efficiencies.
 
Date 2023-07-03T11:01:32Z
2023-07-03T11:01:32Z
2023-07
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/62243
https://doi.org/10.56042/ijpap.v61i7.105
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.61(07) [July 2023]