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Title: Tailoring the energy distribution and loss of 2D plasmons

Journal Article · · New Journal of Physics
 [1];  [2];  [2];  [2];  [3];  [2]
  1. Zhejiang Univ., Hangzhou (People's Republic of China); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Zhejiang Univ., Hangzhou (People's Republic of China)

Here, the ability to tailor the energy distribution of plasmons at the nanoscale has many applications in nanophotonics, such as designing plasmon lasers, spasers, and quantum emitters. To this end, we analytically study the energy distribution and the proper field quantization of 2D plasmons with specific examples for graphene plasmons. We find that the portion of the plasmon energy contained inside graphene (energy confinement factor) can exceed 50%, despite graphene being infinitely thin. In fact, this very high energy confinement can make it challenging to tailor the energy distribution of graphene plasmons just by modifying the surrounding dielectric environment or the geometry, such as changing the separation distance between two coupled graphene layers. However, by adopting concepts of parity-time symmetry breaking, we show that tuning the loss in one of the two coupled graphene layers can simultaneously tailor the energy confinement factor and propagation characteristics, causing the phenomenon of loss-induced plasmonic transparency.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001299; FG02-09ER46577
OSTI ID:
1388440
Journal Information:
New Journal of Physics, Vol. 18, Issue 10; Related Information: S3TEC partners with Massachusetts Institute of Technology (lead); Boston College; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (14)

Group-Velocity-Controlled and Gate-Tunable Directional Excitation of Polaritons in Graphene-Boron Nitride Heterostructures journal March 2018
Plasmon-Enhanced Spin-Orbit Interaction of Light in Graphene journal August 2018
Strong absorption near exceptional points in plasmonic waveguide arrays journal August 2018
Adiabatic transfer of surface plasmons in non-Hermitian graphene waveguides journal October 2018
Topological plasmonic modes in graphene-coated nanowire arrays journal May 2019
Low-Threshold Lasing and Coherent Perfect Absorption in Generalized P T -Symmetric Optical Structures journal August 2018
Hydrodynamic model approach to the formation of plasmonic wakes in graphene journal November 2017
Energy losses and transition radiation in graphene traversed by a fast charged particle under oblique incidence journal November 2018
Experimental Observation of Superscattering journal February 2019
Losses in plasmonics: from mitigating energy dissipation to embracing loss-enabled functionalities text January 2018
Group-velocity-controlled and gate-tunable directional excitation of polaritons in graphene-boron nitride heterostructures preprint January 2018
Experimental observation of superscattering preprint January 2018
Tailoring Eigenmodes at Spectral Singularities in Graphene-based PT Systems journal September 2017
Broadband Negative Refraction of Highly Squeezed Hyperbolic Polaritons in 2D Materials journal January 2018