Terahertz radiation has become an important diagnostic tool in the development of new
technologies. However, the diffraction limit prevents terahertz radiation (λ≈ 0.01–3 mm) …

Infrared and optical spectroscopy represents one of the most informative methods in
advanced materials research. As an important branch of modern optical techniques that has …

Probing matter with light in the mid-infrared provides unique insight into molecular
composition, structure, and function with high sensitivity. However, laser spectroscopy in this …

While near-field infrared nanospectroscopy provides a powerful tool for nanoscale material
characterization, broadband nanospectroscopy of elementary material excitations in the …

Electromagnetic field confinement is crucial for nanophotonic technologies, since it allows
for enhancing light–matter interactions, thus enabling light manipulation in deep sub …

van der Waals nanomaterials supporting phonon polariton quasiparticles possess
extraordinary light confinement capabilities, making them ideal systems for molecular …

Infrared (IR) spectroscopy has evolved into a powerful analytical technique to probe
molecular and lattice vibrations, low-energy electronic excitations and correlations, and …

The terahertz (THz) frequency range is key to studying collective excitations in many crystals
and organic molecules. However, due to the large wavelength of THz radiation, the local …

Hyperbolic phonon polaritons have recently attracted considerable attention in
nanophotonics mostly due to their intrinsic strong electromagnetic field confinement …

Phonon polaritons, the hybrid quasiparticles resulting from the coupling of photons and
lattice vibrations, have gained significant attention in the field of layered van der Waals …