First experimental results with the free electron laser coupled to a scanning near-field optical microscope
| Autor: | Ishwar D. Aggarwal, P. Perfetti, Marco Luce, Jonathan M. Gilligan, Norman Tolk, Matteo Rinaldi, Giorgio Margaritondo, A. Cricenti, C. Barchesi, Carlo Coluzza, Renato Generosi, David T. Schaafsma |
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| Předmět: |
Physics
Conventional transmission electron microscope Scanning Hall probe microscope Microscope business.industry Near-field optics Scanning confocal electron microscopy Physics::Optics Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Optics RESOLUTION law Near-field scanning optical microscope Electron beam-induced deposition PHOTOEMISSION Infrared microscopy business |
| Zdroj: | Scopus-Elsevier |
| Popis: | First experiments of coupling a free electron laser to a scanning near-field optical microscope (SNOM) are presented. To address the question of how important such spectroscopy can be for near-field infrared microscopy, we acquired images of the same region of the sample under investigation at several photon wavelengths. SNOM reflectivity images revealed features that were not present in the corresponding shear-force (topology) ones and which were due to localized changes in the bulk properties of the sample. Optical data in the infrared (near 3.5 mu m), using the probe tips in collection mode, indicates an optical spatial resolution well below the classical limit of lambda/2. |
| Databáze: | OpenAIRE |
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