Journal
ACS PHOTONICS
Volume 1, Issue 10, Pages 906-911Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ph500192v
Keywords
metamaterials; nanocavities; strong light-matter interaction; intersubband trasitions; near-infrared
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Funding
- Laboratory Directed Research and Development Program at Sandia National Laboratories
- U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
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We present the design, realization, and characterization of optical strong light-matter coupling between intersubband transitions within a semiconductor heterostructures and planar metamaterials in the near-infrared spectral range. The strong light-matter coupling entity consists of a III-nitride intersubband superlattice heterostructure, providing a two-level system with a transition energy of similar to 0.8 eV (lambda similar to 1.55 mu m) and a planar dogbone metamaterial structure. As the bare metamaterial resonance frequency is varied across the intersubband resonance, a clear anticrossing behavior is observed in the frequency domain. This strongly coupled entity could enable the realization of electrically tunable optical filters, a new class of efficient nonlinear optical materials, or intersubband-based light-emitting diodes.
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