Imaging Nanoscale Electromagnetic Near-Field Distributions Using Optical Forces

Imaging Nanoscale Electromagnetic Near-Field Distributions Using Optical Forces

We demonstrate the application of Atomic Force Microscopy (AFM) for mapping optical near-fields with nanometer resolution, limited only by the AFM probe geometry. By detecting the optical force between a gold coated AFM probe and its image dipole on a glass substrate, we profile the electric field distributions of tightly focused laser beams with different polarizations. The experimentally reco...

Nanoscale Optical Tomography using Volume-scanning Near-field Microscopy

microscopy Jin Sun, John C. Schotland, Rainer Hillenbrand, and P. Scott Carney Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801, USA Department of Bioengineering and Graduate Group in Applied Mathematics and Computational Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA Nanooptics Laboratory, CIC nanoGUNE Consolider, 200...

Enlarged near-field optical imaging

Scanning near-field optical microscopy with white-light illumination: nanoscale imaging and spectroscopy of resonant systems

We present the realisation of near-field spectroscopic measurements with fibre-tip-based scanning near-field microscopy. It allows simultaneous acquisition of near-field optical images in a broad spectral range (400 nm to 1000 nm), thus recovering local spectroscopic information. The technique is essential for understanding the resonant interaction of light with nanostructured objects as the fa...

Background suppression in near-field optical imaging.

In several recent studies, antenna-based optical microscopy has demonstrated its potential to resolve features as small as 10 nm. Most studies are concerned with well-separated features on flat surfaces, and there are only few studies that deal with samples of high feature density or even three-dimensional objects. The reason is that the external laser irradiation of the optical antenna (e.g., ...