Experimental realization of deep-subwavelength confinement in dielectric optical resonators

Science Advances
Shuren HuSharon M Weiss

Abstract

The ability to highly localize light with strong electric field enhancement is critical for enabling higher-efficiency solar cells, light sources, and modulators. While deep-subwavelength modes can be realized with plasmonic resonators, large losses in these metal structures preclude most practical applications. We developed an alternative approach to achieving subwavelength localization of the electric and displacement fields that is not accompanied by inhibitive losses. We experimentally demonstrate a dielectric bowtie photonic crystal structure that supports mode volumes commensurate with plasmonic elements and quality factors that reveal ultralow losses. Our approach opens the door to the extremely strong light-matter interaction regime with, simultaneously incorporating both an ultralow mode volume and an ultrahigh quality factor, that had remained elusive in optical resonators.

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Citations

Oct 16, 2019·Scientific Reports·Cristian Felipe Ramirez-GutierrezMario Enrique Rodriguez-García
May 10, 2020·Physical Review Letters·Mikkel HeuckDirk R Englund
Jun 6, 2019·Optics Express·Francis O AfzalSharon M Weiss
Jan 10, 2021·Nature Communications·Stefan KrastanovKurt Jacobs
Jan 19, 2021·Nanotechnology·Md Rabiul Hasan, Olav Gaute Hellesø
Jul 25, 2020·Science·Vincent GinisFederico Capasso
Aug 3, 2021·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Jiaxin HouAhu Gümrah Dumanli
Feb 23, 2019·Nano Letters·Sandro MignuzziRiccardo Sapienza
Jul 11, 2019·The Journal of Physical Chemistry Letters·Rocío Sáez-BlázquezFrancisco J García-Vidal
Sep 2, 2020·ACS Nano·Hugo M DoelemanA Femius Koenderink
Sep 2, 2021·Optics Letters·Dolf TimmermanYasufumi Fujiwara
Sep 24, 2021·ACS Photonics·Rohit Chikkaraddy, Jeremy J Baumberg
Nov 28, 2021·Small·Johannes E FröchIgor Aharonovich
Oct 9, 2020··Jesper MorkKresten Yvind
Sep 3, 2019··Ole SigmundRasmus E. Christiansen

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Methods Mentioned

BETA
surface plasmon resonance
AFM
electron beam lithography

Software Mentioned

Lumerical FDTD
NSOM

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