Abstract
We present combined experimental and numerical work on light-matter interactions at nanometer length scales. We report numerical simulations of near-field infrared nanospectroscopy that consider detailed tip geometry and have no free parameters. Our results match published spectral shapes of amplitude and phase measurements even for strongly resonant surface phonon-polariton (SPhP) modes. They also verify published absolute scattering amplitudes. A unique, ultrabroadband light source enables near-field amplitude and phase acquisition into the far-infrared spectral range. This allowed us to discover a strong SPhP resonance in the polar dielectric SrTiO3 (STO) at an similar to 24-mu m wavelength of incident light.
Item Type: | Journal article |
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Faculties: | Physics |
Research Centers: | Center for NanoScience (CENS) |
Subjects: | 500 Science > 530 Physics 500 Science > 500 Science |
Language: | English |
Item ID: | 89103 |
Date Deposited: | 25. Jan 2022, 09:28 |
Last Modified: | 25. Jan 2022, 09:28 |