Ultrafast Time-Resolved Spatial Mapping of Field-Enhanced Two-Photon Photoemission from Metal Surfaces (original) (raw)

2010

Abstract

Field enhancement effects at metallic nanostructures are crucial for experimental techniques such as surface-enhanced Raman spectroscopy and scanning near-field optical microscopy that detect optical signals (e.g., due to Raman scattering, surface plasmon resonances, fluorescence, or frequency mixing) to interrogate surface chemical and physical interactions at the nanoscale. However, the spatial resolution of these all- optical techniques is limited to tens

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