Theory of Tip-Enhanced Near-Field Optical Microscopy
Current main topics:
- Electromagnetic field calculations of the field between a near-field tip and the substrate
- Calculation of the field in the focus of an objective or parabolic mirror, simulation of scan images
- Theory for contrast enhancement in confocal microscopy of biological samples
- Software engineering of highly specialized software solutions for measuring and data analysis
| Project description | Collaboration partners | |
|---|---|---|
MMP based simulation of a Scanning Near field Optical Microscope using a parabolic mirror to focus a radially polarized beam on a metallic tip. | C. Hafner (ETH Zürich) |  |
Numerical modeling of sharp metallic tips is a computationally intensive problem. Here we discuss different approaches for obtaining reliable simulation results. |  | |
We theoretically analyzed a scheme for optical trapping of neutral atoms by plasmonic nanotips |  | |
Modeling of coupling and emission between a surface plasmon and freely propagating light | S. Slama (Universität Tübingen) |  |
FDTD simulation of a Scanning Near field Optical Microscope for analyzing the interaction of a gold tip with a silicone substrate. |  | |
By employing azimuthally and radially polarised laser beams Fischer patterns can be excited by using either a pure in-plane (x,y) electric field or a strongly z-directional (optical axis of the optical microscope) electric field. Here we modeled the generation of scan images |  |
