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Hu S, Khater M, Salas-Montiel R, et al. Experimental realization of deep-subwavelength confinement in dielectric optical resonators. Sci Adv. 2018;4(8):eaat2355doi: 10.1126/sciadv.aat2355.
Hu, S., Khater, M., Salas-Montiel, R., Kratschmer, E., Engelmann, S., Green, W. M. J., & Weiss, S. M. (2018). Experimental realization of deep-subwavelength confinement in dielectric optical resonators. Science advances, 4(8), eaat2355. https://doi.org/10.1126/sciadv.aat2355
Hu, Shuren, et al. "Experimental realization of deep-subwavelength confinement in dielectric optical resonators." Science advances vol. 4,8 (2018): eaat2355. doi: https://doi.org/10.1126/sciadv.aat2355
Hu S, Khater M, Salas-Montiel R, Kratschmer E, Engelmann S, Green WMJ, Weiss SM. Experimental realization of deep-subwavelength confinement in dielectric optical resonators. Sci Adv. 2018 Aug 24;4(8):eaat2355. doi: 10.1126/sciadv.aat2355. eCollection 2018 Aug. PMID: 30151424; PMCID: PMC6108564.
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Sci Adv. 2018 Aug 24;4(8):eaat2355. doi: 10.1126/sciadv.aat2355. eCollection 2018 Aug.

Experimental realization of deep-subwavelength confinement in dielectric optical resonators.

Science advances

Shuren Hu, Marwan Khater, Rafael Salas-Montiel, Ernst Kratschmer, Sebastian Engelmann, William M J Green, Sharon M Weiss

Affiliations

  1. Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA.
  2. IBM Thomas J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, NY 10598, USA.
  3. Laboratoire de Nanotechnologie et d'Instrumentation Optique, Institut Charles Delaunay CNRS-UMR 6281, Université de Technologie de Troyes, Troyes 10004, France.
  4. Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235, USA.

PMID: 30151424 PMCID: PMC6108564 DOI: 10.1126/sciadv.aat2355

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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