Journal
PHYSICAL REVIEW LETTERS
Volume 116, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.237401
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Funding
- ERC Advanced Grant COMPLEXPLAS
- DFG [SPP 1839]
- VW Stiftung
- BMBF
- MWK Baden-Wurttemberg (Zukunftsoffensive IV)
- Baden-Wurttemberg Stiftung (Spitzenforschung II)
- Leverhulme Royal Society Research Fellowship [LT20085]
- EPSRC Impact Acceleration Account [EP/K503988/1]
- Ser Cymru National Research Network
- Engineering and Physical Sciences Research Council [EP/K503988/1] Funding Source: researchfish
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We present a first-order perturbation theory to calculate the frequency shift and linewidth change of photonic resonances in one-and two-dimensional periodic structures under modifications of the surrounding refractive index. Our method is based on the resonant state expansion, for which we extend the analytical mode normalization to periodic structures. We apply this theory to calculate the sensitivity of bright dipolar and much darker quadrupolar plasmonic modes by determining the maximum shift and optimal sensing volume.
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