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Title: Topological Spaser

Abstract

We theoretically introduce a topological spaser, which consists of a hexagonal array of plasmonic metal nanoshells containing an achiral gain medium in their cores. Such a spaser can generate two mutually time-reversed chiral surface plasmon modes in the K and K' valleys, which carry the opposite topological charges, ± 1, and are described by a two-dimensional $$\textit{E'}$$ representation of the $$D_{3h}$$ point symmetry group. Due to the mode competition, this spaser exhibits a bistability: only one of these two modes generates, which is a spontaneous symmetry breaking. Such a spaser can be used for an ultrafast all-optical memory and information processing, and biomedical detection and sensing with chirality resolution.

Authors:
 [1];  [1]; ORCiD logo [1]
  1. Georgia State Univ., Atlanta, GA (United States)
Publication Date:
Research Org.:
Georgia State Univ., Atlanta, GA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR)
OSTI Identifier:
1800015
Grant/Contract Number:  
FG02-01ER15213; SC0007043; EFMA-1741691; N00014-17-1-2588
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 124; Journal Issue: 1; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; Physics

Citation Formats

Wu, Jhih-Sheng, Apalkov, Vadym, and Stockman, Mark I. Topological Spaser. United States: N. p., 2020. Web. doi:10.1103/physrevlett.124.017701.
Wu, Jhih-Sheng, Apalkov, Vadym, & Stockman, Mark I. Topological Spaser. United States. https://doi.org/10.1103/physrevlett.124.017701
Wu, Jhih-Sheng, Apalkov, Vadym, and Stockman, Mark I. Mon . "Topological Spaser". United States. https://doi.org/10.1103/physrevlett.124.017701. https://www.osti.gov/servlets/purl/1800015.
@article{osti_1800015,
title = {Topological Spaser},
author = {Wu, Jhih-Sheng and Apalkov, Vadym and Stockman, Mark I.},
abstractNote = {We theoretically introduce a topological spaser, which consists of a hexagonal array of plasmonic metal nanoshells containing an achiral gain medium in their cores. Such a spaser can generate two mutually time-reversed chiral surface plasmon modes in the K and K' valleys, which carry the opposite topological charges, ± 1, and are described by a two-dimensional $\textit{E'}$ representation of the $D_{3h}$ point symmetry group. Due to the mode competition, this spaser exhibits a bistability: only one of these two modes generates, which is a spontaneous symmetry breaking. Such a spaser can be used for an ultrafast all-optical memory and information processing, and biomedical detection and sensing with chirality resolution.},
doi = {10.1103/physrevlett.124.017701},
journal = {Physical Review Letters},
number = 1,
volume = 124,
place = {United States},
year = {Mon Jan 06 00:00:00 EST 2020},
month = {Mon Jan 06 00:00:00 EST 2020}
}

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