Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2019

Идентификатор DOI: 10.1364/OL.44.005743

Аннотация: Collective lattice resonances (CLRs) in finite-sized 2D arrays of dielectric nanospheres have been studied via the coupled dipole approximation. We show that even for sufficiently large arrays, up to 100 x 100 nanoparticles (NPs), electric or magnetic dipole CLRs may differ significantly from the ones calculated for infinite arrays with the same NP sizes and interparticle distances. The discrepancy is explained by the existence of a sufficiently strong cross-interaction between electric and magnetic dipoles induced at NPs in finite-sized lattices, which is ignored for infinite arrays. We support this claim numerically and propose an analytic model to estimate a spectral width of CLRs for finite-sized arrays. Given that most of the current theoretical and numerical researches on collective effects in arrays of dielectric NPs rely on modeling infinite structures, the reported findings may contribute to thoughtful and optimal design of inherently finite-sized photonic devices. (C) 2019 Optical Society of America

Журнал: OPTICS LETTERS

Выпуск журнала: Vol. 44, Is. 23

Номера страниц: 5743-5746

ISSN журнала: 01469592

Место издания: WASHINGTON

Издатель: OPTICAL SOC AMER

• Zakomirnyi V.I (Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Theoret Chem & Biol, SE-10691 Stockholm, Sweden; FMBA Russia, Fed Siberian Res Clin Ctr, Krasnoyarsk 660037, Russia; Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
• Ershov A.E. (Inst Computat Modeling SB RAS, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia; Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia)
• Gerasimov V.S. (Inst Computat Modeling SB RAS, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
• Karpov S.V (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia; Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia)
• Agren H. (Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Theoret Chem & Biol, SE-10691 Stockholm, Sweden; FMBA Russia, Fed Siberian Res Clin Ctr, Krasnoyarsk 660037, Russia)
• Rasskazov I.L. (Univ Rochester, Inst Opt, Rochester, NY 14627 USAArticle)

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