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Programmable hyperbolic polaritons in van der Waals semiconductors

Authors :
Michael M. Fogler
Simone Latini
Sang Hoon Chae
Dimitri Basov
Baichang Li
Yinming Shao
Andrey Rikhter
Aaron Sternbach
B. Kim
P Schuck
Daniel Rhodes
Richard D. Averitt
Xiaodong Xu
Angel Rubio
James Hone
Xiaoyang Zhu
Source :
Science
Publication Year :
2021

Abstract

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. Sternbach et 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

Details

Language :
English
Database :
OpenAIRE
Journal :
Science
Accession number :
edsair.doi.dedup.....5ab60b661181d20f41e3cdb88bf4faa0