Giant field enhancement in high-index dielectric subwavelength particles

Polina Kapitanova, Vladimir Ternovski, Andrey Miroshnichenko*, Nikita Pavlov, Pavel Belov, Yuri Kivshar, Michael Tribelsky

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    48 Citations (Scopus)

    Abstract

    Besides purely academic interest, giant field enhancement within subwavelength particles at light scattering of a plane electromagnetic wave is important for numerous applications ranging from telecommunications to medicine and biology. In this paper, we experimentally demonstrate the enhancement of the intensity of the magnetic field in a high-index dielectric cylinder at the proximity of the dipolar Mie resonances by more than two orders of magnitude for both the TE and TM polarizations of the incident wave. We present a complete theoretical explanation of the effect and show that the phenomenon is very general-it should be observed for any high-index particles. The results explain the huge enhancement of nonlinear effects observed recently in optics, suggesting a new landscape for all-dielectric nonlinear nanoscale photonics.

    Original languageEnglish
    Article number731
    JournalScientific Reports
    Volume7
    Issue number1
    DOIs
    Publication statusPublished - 1 Dec 2017

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