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Shape Deformation of Nanoresonator: A Quasinormal-Mode Perturbation Theory

hal.structure.identifierWestlake University [Zhejiang]
hal.structure.identifierWestlake Institute for Advanced Study [WIAS]
dc.contributor.authorYAN, Wei
hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
dc.contributor.authorLALANNE, Philippe
hal.structure.identifierWestlake University [Zhejiang]
hal.structure.identifierWestlake Institute for Advanced Study [WIAS]
dc.contributor.authorQIU, Min
dc.date.accessioned2023-05-12T10:39:51Z
dc.date.available2023-05-12T10:39:51Z
dc.date.issued2020-07
dc.identifier.issn0031-9007
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/181594
dc.description.abstractEnWhen material parameters are fixed, optical responses of nanoresonators are dictated by their shapes and dimensions. Therefore, both designing nanoresonators and understanding their underlying physics would benefit from a theory that predicts the evolutions of resonance modes of open systems—the so-called quasinormal modes (QNMs)—as the nanoresonator shape changes. QNM perturbation theories (PTs) are one ideal choice. However, existing theories developed for tiny material changes are unable to provide accurate perturbation corrections for shape deformations. By introducing a novel extrapolation technique, we develop a rigorous QNM PT that faithfully represents the electromagnetic fields in perturbed domain. Numerical tests performed on the eigenfrequencies, eigenmodes, and optical responses of deformed nanoresonators evidence the predictive force of the present PT, even for large deformations. This opens new avenues for inverse design, as we exemplify by designing super-cavity modes and exceptional points with remarkable ease and physical insight.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enShape Deformation of Nanoresonator: A Quasinormal-Mode Perturbation Theory
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.125.013901
dc.subject.halPhysique [physics]/Physique [physics]/Optique [physics.optics]
bordeaux.journalPhysical Review Letters
bordeaux.volume125
bordeaux.hal.laboratoriesLaboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298*
bordeaux.issue1
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-03001919
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03001919v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20Letters&rft.date=2020-07&rft.volume=125&rft.issue=1&rft.eissn=0031-9007&rft.issn=0031-9007&rft.au=YAN,%20Wei&LALANNE,%20Philippe&QIU,%20Min&rft.genre=article


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