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Mid-infrared nanophotonics

Probing hyperbolic polaritons

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Hyperbolic phonon polaritons confined to the subdiffraction limit exhibit encouragingly long lifetimes and group velocities as slow as 0.002c. Researchers use a time-resolved set-up sensitive to nanometre-scale optical fields to shed light on the exciting optical properties of hyperbolic materials.

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Figure 1: Time-domain scattering-type scanning near-field optical microscopy of h-BN in the mid-infrared.

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Authors and Affiliations

  1. Joshua D. Caldwell, Igor Vurgaftman and Joseph G. Tischler are at the US Naval Research Laboratory, 4555 Overlook Ave, S.W., Washington DC 20375, USA,

    Joshua D. Caldwell, Igor Vurgaftman & Joseph G. Tischler

Authors
  1. Joshua D. Caldwell
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  2. Igor Vurgaftman
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  3. Joseph G. Tischler
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Correspondence to Joshua D. Caldwell, Igor Vurgaftman or Joseph G. Tischler.

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Caldwell, J., Vurgaftman, I. & Tischler, J. Probing hyperbolic polaritons. Nature Photon 9, 638–640 (2015). https://doi.org/10.1038/nphoton.2015.183

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