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In-plane vector-field imaging of propagating surface phonon polaritons
Richarda Niemann, Dorothée S. Mader, Gonzalo Alvarez-Pérez +9
Polariton interferometry through optical near-field microscopy has become a powerful tool in nanophotonics, enabling direct spatial access to the propagation characteristics of str…
Fast Programming of In-Plane Hyperbolic Phonon Polariton Optics Through van der Waals Crystals using the Phase-Change Material In3SbTe2
Lina Jäckering, Umberto Saldarelli, Aaron Moos +8
The high directionality of hyperbolic phonon polaritons (HPhPs) has opened radically new ways to route and steer the flow of energy at the nanoscale. However, launching HPhPs requi…
MoOCl as a Hyperbolic Planar Platform for Nanooptics at Telecom Frequencies
Haozhe Tong, Clara Clemente-Marcuello, Kirill V. Voronin +2
On-chip optoelectronics is fundamental to modern telecommunication, yet the diffraction limit of light remains a major obstacle to the extreme miniaturization of photonic integrate…
Launching of Visible-Range Hyperbolic Polaritons by Gold Nanoantennas in a natural van der Waals crystal
Clara Clemente-Marcuello, Haozhe Tong, Kirill V. Voronin +2
Anisotropic van der Waals materials provide a powerful platform for nanoscale optoelectronics, enabling strong lightmatter interaction and deep electromagnetic field confinement…
Bloch phonon-polaritons with anomalous dispersion in polaritonic Fourier crystals
Sergey G. Menabde, Yongjun Lim, Alexey Y. Nikitin +5
The recently suggested concept of a polaritonic Fourier crystal (PFC) is based on a harmonically-corrugated mirror substrate for a thin pristine polaritonic crystal layer. The prop…
High-intensity wave vortices around subwavelength holes: from ocean tides to nanooptics
Kateryna Domina, Pablo Alonso-González, Andrei Bylinkin +9
Vortices are ubiquitous in nature; they appear in a variety of phenomena ranging from galaxy formation in astrophysics to topological defects in quantum fluids. In particular, wave…
Low-loss twist-tunable in-plane anisotropic polaritonic crystals
Nathaniel Capote-Robayna, Ana I. F. Tresguerres-Mata, Aitana Tarazaga Martín-Luengo +4
Van der Waals (vdW) materials supporting phonon polaritons (PhPs) - light coupled to lattice vibrations - have gathered significant interest because of their intrinsic anisotropy a…
Canalization-based super-resolution imaging using a single van der Waals layer
Jiahua Duan, Aitana Tarazaga Martin-Luengo, Christian Lanza +7
Canalization is an optical phenomenon that enables unidirectional propagation of light in a natural way, i.e., without the need for predefined waveguiding designs. Predicted years…
Planar nano-optics in anisotropic media: anomalous refraction and diffraction-free lensing of highly confined polaritons
J. Duan, G. Álvarez-Pérez, A. I. F. Tresguerres-Mata +13
As one of the most fundamental optical phenomena, refraction between isotropic media is characterized by light bending towards the normal to the boundary when passing from a low- t…
Enabling propagation of anisotropic polaritons along forbidden directions via a topological transition
Jiahua Duan, Gonzalo Álvarez-Pérez, Kirill V. Voronin +6
Recent discoveries of polaritons in van der Waals (vdW) crystals with directional in-plane propagation, ultra-low losses, and broad spectral tunability have opened the door for unp…