Deeply subwavelength phonon-polaritonic crystal made of a van der Waals material

F. J. Alfaro-Mozaz, S. G. Rodrigo, P. Alonso-González, S. Vélez, I. Dolado, F. Casanova, L. E. Hueso, L. Martín-Moreno, R. Hillenbrand () and A. Y. Nikitin ()
Additional contact information
F. J. Alfaro-Mozaz: CIC nanoGUNE
S. G. Rodrigo: CSIC-Universidad de Zaragoza
P. Alonso-González: Universidad de Oviedo
S. Vélez: CIC nanoGUNE
I. Dolado: CIC nanoGUNE
F. Casanova: CIC nanoGUNE
L. E. Hueso: CIC nanoGUNE
L. Martín-Moreno: CSIC-Universidad de Zaragoza
R. Hillenbrand: IKERBASQUE, Basque Foundation for Science
A. Y. Nikitin: IKERBASQUE, Basque Foundation for Science

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Photonic crystals (PCs) are periodically patterned dielectrics providing opportunities to shape and slow down the light for processing of optical signals, lasing and spontaneous emission control. Unit cells of conventional PCs are comparable to the wavelength of light and are not suitable for subwavelength scale applications. We engineer a nanoscale hole array in a van der Waals material (h-BN) supporting ultra-confined phonon polaritons (PhPs)—atomic lattice vibrations coupled to electromagnetic fields. Such a hole array represents a polaritonic crystal for mid-infrared frequencies having a unit cell volume of $${\mathrm{10}}^{{\mathrm{ - 5}}}{\lambda}_{\mathrm{0}}^{\mathrm{3}}$$ 10 -5 λ 0 3 (with λ0 being the free-space wavelength), where PhPs form ultra-confined Bloch modes with a remarkably flat dispersion band. The latter leads to both angle- and polarization-independent sharp Bragg resonances, as verified by far-field spectroscopy and near-field optical microscopy. Our findings could lead to novel miniaturized angle- and polarization-independent infrared narrow-band couplers, absorbers and thermal emitters based on van der Waals materials and other thin polar materials.

Date: 2019
References: Add references at CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/s41467-018-07795-6 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-018-07795-6

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-018-07795-6

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().