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This thesis investigates the fundamental nanoscale near-field light matter interaction between a probe tip and plasmonic antenna nanostructures. The thesis is focused on polarization control of metallic plasmon modes using scattering-type scanning near-field optical microscopy (s-SNOM). Part of the thesis is dedicated to spectroscopic near-field comparison of coated and bare single plasmonic particles in the infrared wavelength range (λ= 9–11 µm) using s-SNOM. By tuning the wavelength of the incident light, we have acquired information on the spectral polarization dependence plasmon modes and plasmon/phonon–polariton resonant near-field interactions. The enhanced near-field coupling between the probe tip and high index Au nanostructures and Au-core thin silica coating (thickness ≈10 nm) is described and quantified.
| Advisor: | Abate, Yohannes |
| Commitee: | Bill, Andreas, Shon, Young-Seok |
| School: | California State University, Long Beach |
| Department: | Physics and Astronomy |
| School Location: | United States -- California |
| Source: | MAI 52/05M(E), Masters Abstracts International |
| Source Type: | DISSERTATION |
| Subjects: | Condensed matter physics, Optics |
| Keywords: | Nano-optics, Near-field, Phonon, Plasma |
| Publication Number: | 1527542 |
| ISBN: | 978-1-303-79581-7 |
