A deep subwavelength cavity formed by total external reflection of surface plasmon polariton

Title
A deep subwavelength cavity formed by total external reflection of surface plasmon polariton
Authors
이광걸
Keywords
WAVE-GUIDES; METAL-FILMS; PROPAGATION; CONFINEMENT; PHOTOLUMINESCENCE; ABSORPTION; LASERS; SCALE; ZNSE
Issue Date
2015-06
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF APPLIED PHYSICS, v. 117, NO 17, Page. 173104-173108
Abstract
We numerically analyze the characteristics of a nanocavity in surface plasmon polariton (SPP) modes confined by total external reflection (TER) at deep subwavelength scales. This SPP-TER cavity consists of a low-index dielectric channel on a flat metal surface covered by a high-index gain medium. Compared to other types of nanocavities formed by total internal reflection such as a metallic channel and a high-index dielectric channel, an SPP-TER nanocavity provides superior functionality on mode area, confinement factor in the gain medium, Q-factor, and threshold gain. From this result, we suggest the SPP-TER nanocavity as a promising high-quality deep-subwavelength scale resonator, which is an essential ingredient in nanophotonics. (C) 2015 AIP Publishing LLC.
URI
http://aip.scitation.org/doi/abs/10.1063/1.4919757http://hdl.handle.net/20.500.11754/25601
ISSN
0021-8979; 1089-7550
DOI
http://dx.doi.org/10.1063/1.4919757
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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