Journal
ADVANCED OPTICAL MATERIALS
Volume 8, Issue 5, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201901393
Keywords
hyperbolic response; nanophotonics; phonon polaritons; van der Waals materials
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Funding
- AFOSR MURI [FA9550-17-1-0002]
- DARPA Nascent program
- National Science Foundation
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Phonon polaritons provide useful opportunities, complementary to those provided by plasmon polaritons, in the study of the interaction of light with matter at small scales. The focus of this review is on phonon polaritons in low-dimensional van der Waals (vdW) materials and heterostructures. Phonon polaritons confined in vdW materials exhibit large electromagnetic localization and are easy to hybridize with other collective modes. The extreme optical anisotropy in vdW systems produces the natural hyperbolic dispersion, enabling the access to deep subdiffractional optics and often yielding improved figures of merit over hyperbolic metamaterials. These virtues hold promises for practical nanophotonic applications, including optical sensing, super-resolution imaging, energy and emission engineering, quantum optics, and a next generation of optical circuit elements.
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