Phase imaging and detection in pseudo-heterodyne scattering scanning near-field optical microscopy measurements
When considering the pseudo-heterodyne mode for detection of the modulus and phase of the near field from scattering scanning near-field optical microscopy (s-SNOM) measurements, processing only the modulus of the signal may produce an undesired constraint in the accessible values of the phase of th...
| Authors: | ; ; ; |
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| Format: | Article |
| Publication date: | 2017 |
| Country: | España |
| Institution: | Universidad Complutense de Madrid (UCM) |
| Repository: | Docta Complutense |
| Language: | English |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/17601 |
| Online Access: | https://hdl.handle.net/20.500.14352/17601 |
| Access Level: | Open access |
| Keyword: | 535.14 535.82 Phase measurement Near-field microscopy Surface plasmons Nanophotonics and photonic crystals Electromagnetismo Óptica (Física) Optoelectrónica 2202 Electromagnetismo 2209.19 Óptica Física |
| Summary: | When considering the pseudo-heterodyne mode for detection of the modulus and phase of the near field from scattering scanning near-field optical microscopy (s-SNOM) measurements, processing only the modulus of the signal may produce an undesired constraint in the accessible values of the phase of the near field. A two-dimensional analysis of the signal provided by the data acquisition system makes it possible to obtain phase maps over the whole [0, 2 |
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