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Proceedings Paper

Photonic skin-depth engineering: universal spin-momentum locking of light (Conference Presentation)

Paper Abstract

Here, we surpass the diffraction limit of light by a new class of all-dielectric artificial materials that are lossless. This overcomes one of the fundamental challenges of light confinement in metamaterials and plasmonics: metallic loss. Our approach relies on controlling the optical momentum of evanescent waves as opposed to conventional photonic devices which manipulate propagating waves. This leads to a counterintuitive confinement strategy for electromagnetic waves across the entire spectrum. We introduce two distinct photonic design principles that can ideally lead to sub-diffraction light confinement without metal. They are i) relaxed total internal reflection and ii) photonic skin-depth engineering. We present initial experimental results on a CMOS compatible platform that prove the enhanced confinement of our all-dielectric metamaterial design.

Paper Details

Date Published: 28 April 2017
PDF: 1 pages
Proc. SPIE 10113, High Contrast Metastructures VI, 1011310 (28 April 2017); doi: 10.1117/12.2256002
Show Author Affiliations
Saman Jahani, Purdue Univ. (United States)
Zubin Jacob, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 10113:
High Contrast Metastructures VI
Connie J. Chang-Hasnain; Andrei Faraon; Fumio Koyama; Weimin Zhou, Editor(s)

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