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Programmable hyperbolic polaritons in van der Waals semiconductors

Journal Article · · Science
 [1];  [2];  [3];  [4];  [5];  [2];  [2];  [2];  [2];  [6];  [7];  [4];  [2];  [4];  [8];  [5]
  1. Department of Physics, Columbia University, New York, NY 10027, USA.; OSTI
  2. Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA.
  3. Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany.
  4. Department of Physics, University of California–San Diego, La Jolla, CA 92093, USA.
  5. Department of Physics, Columbia University, New York, NY 10027, USA.
  6. Department of Physics, University of Washington, Seattle, WA 98195, USA.
  7. Department of Chemistry, Columbia University, New York, NY 10027, USA.
  8. Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany.; Center for Computational Quantum Physics (CCQ), Flatiron Institute, New York, NY 10010, USA.
Lighting a route for hyperbolic dispersion

The propagation of light within a material is usually well defined, with the propagation described by scattering and dispersion. In artificially designed metamaterials and in anisotropic layered materials, the dispersion can be hyperbolic, giving rise to subwavelength confinement of the light. Sternbachet al.show that the hyperbolic dispersion can be optically switched on and off on demand in the layered transition metal dichalcogenide tungsten diselenide (see the Perspective by Deng and Chen). Illuminating the material with ultrafast pulses of sub-bandgap light creates a transient waveguide, resulting in hyperbolic dispersion in the material. The ability to tune the dispersion characteristics on demand using optical pumping is an effective approach for developing ultrafast switching photonic devices and controlling the propagation of light on the nanoscale.

Science, this issue p.617; see also p.572

Research Organization:
Columbia Univ., New York, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
SC0019443
OSTI ID:
1853269
Journal Information:
Science, Journal Name: Science Journal Issue: 6529 Vol. 371; ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English

References (44)

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