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Infrared permittivity of the biaxial van der Waals semiconductor -MoO from near- and far-field correlative studies
Gonzalo Álvarez-Pérez, Thomas G. Folland, Ion Errea +13
The biaxial van der Waals semiconductor -phase molybdenum trioxide (-MoO) has recently received significant attention due to its ability to support highly anisotropic pho…
Refractive Index-Based Control of Hyperbolic Phonon-Polariton Propagation
Alireza Fali, Samuel T. White, Thomas G. Folland +7
Hyperbolic phonon polaritons (HPhPs) are generated when infrared photons couple to polar optic phonons in anisotropic media, confining long-wavelength light to nanoscale volumes. H…
Surface phonon polariton resonance imaging using long-wave infrared-visible sum-frequency generation microscopy
Riko Kiessling, Yujin Tong, Alexander J. Giles +5
We experimentally demonstrate long-wave infrared-visible sum-frequency generation microscopy for imaging polaritonic resonances of infrared (IR) nanophotonic structures. This nonli…