Polariton nanophotonics using phase-change materials.

Autor:	Chaudhary K; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA., Tamagnone M; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA. mtamagnone@seas.harvard.edu., Yin X; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA. xyin@seas.harvard.edu., Spägele CM; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA., Oscurato SL; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.; Department of Physics 'E. Pancini', University of Naples 'Federico II', Complesso Universitario di Monte S. Angelo, Via Cinthia 21, 80126, Naples, Italy., Li J; Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA., Persch C; 1. Physikalisches Institut IA, RWTH Aachen University, 52056, Aachen, Germany., Li R; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA., Rubin NA; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA., Jauregui LA; Department of Physics and Astronomy, University of California, Irvine, CA, 92697, USA., Watanabe K; National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan., Taniguchi T; National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan., Kim P; Department of Physics, Harvard University, Cambridge, MA, 02138, USA., Wuttig M; 1. Physikalisches Institut IA, RWTH Aachen University, 52056, Aachen, Germany., Edgar JH; Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA., Ambrosio A; Center for Nanoscale Systems, Harvard University, Cambridge, MA, 02138, USA.; CNST - Fondazione Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133, Milano, Italy., Capasso F; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA. capasso@seas.harvard.edu.
Jazyk:	angličtina
Zdroj:	Nature communications [Nat Commun] 2019 Oct 03; Vol. 10 (1), pp. 4487. Date of Electronic Publication: 2019 Oct 03.
DOI:	10.1038/s41467-019-12439-4
Abstrakt:	Polaritons formed by the coupling of light and material excitations enable light-matter interactions at the nanoscale beyond what is currently possible with conventional optics. However, novel techniques are required to control the propagation of polaritons at the nanoscale and to implement the first practical devices. Here we report the experimental realization of polariton refractive and meta-optics in the mid-infrared by exploiting the properties of low-loss phonon polaritons in isotopically pure hexagonal boron nitride interacting with the surrounding dielectric environment comprising the low-loss phase change material Ge 3 Sb 2 Te 6 . We demonstrate rewritable waveguides, refractive optical elements such as lenses, prisms, and metalenses, which allow for polariton wavefront engineering and sub-wavelength focusing. This method will enable the realization of programmable miniaturized integrated optoelectronic devices and on-demand biosensors based on high quality phonon resonators.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu