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Spontaneous Emission Rate Enhancement with Aperiodic Thue-Morse Multilayer
Scientific Reports
  • Ling Li
  • Cherian J. Mathai
  • Shubhra Gangopadhyay
  • Xiaodong Yang, Missouri University of Science and Technology
  • Jie Gao, Missouri University of Science and Technology

The emergence of multilayer metamaterials in the research field of enhancing spontaneous emission rates has recently received extensive attention. Previous research efforts mostly focus on periodic metal-dielectric multilayers in hyperbolic dispersion region; however, the influence of lattice order in subwavelength multilayers on spontaneous emission is rarely studied. Here, we observe the stronger Purcell enhancement of quantum dots coupled to the aperiodic metal-dielectric multilayer with Thue-Morse lattice order from elliptical to hyperbolic dispersion regions, compared to the periodic multilayer with the same metal filling ratio. This work demonstrates the potential of utilizing quasiperiodic metamaterial nanostructures to engineer the local density of states for various nanophotonic applications.

Mechanical and Aerospace Engineering
Research Center/Lab(s)
Intelligent Systems Center
All authors acknowledge National Science Foundation (ECCS-1653032 and DMR-1552871), Office of Naval Research (N00014-16-1-2408) for the financial support.
Document Type
Article - Journal
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Final Version
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© 2019The Author(s), All rights reserved.
Creative Commons Licensing
Creative Commons Attribution 4.0
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Citation Information
Ling Li, Cherian J. Mathai, Shubhra Gangopadhyay, Xiaodong Yang, et al.. "Spontaneous Emission Rate Enhancement with Aperiodic Thue-Morse Multilayer" Scientific Reports Vol. 9 Iss. 1 (2019) ISSN: 2045-2322
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