University of Illinois

Asociacion Centro De Investigación Cooperativa En Nanosciencias (Cic Nanogune)

Asociación Centre De Investigación Cooperativa En Nanociencias, Cic Nanogune

Asociacion-centro De Investigacion Cooperativa En Nanociencias-cic Nanogune

Rainer Hillenbrand

Paul Scott Carney

Martin Schnell

John Carl Schotland

Jin Sun

Edward Yoxall

The invention relates to a device for conducting near-field optical measurements of a sample comprising a wavelength-tunable monochromatic light source. Further the invention relates to methods for measuring the near-field using such a device.

Near field optical microscope for acquiring spectra

Methods and apparatus for imaging a phase or amplitude that characterizes a scattered field emanating from a physical medium. A local probe is stepped to a plurality of successive probe positions and illuminated with an illuminating beam, while a specified phase function is imposed on a reference beam relative to the illuminating beam. A field associated with the scattered field is superimposed with the reference beam and the detection of both yields a detected signal which is recorded as a function of probe position in order to obtain a hologram. The holograph is transformed, filtered, and retransformed to generate an image. Alternatively, the illuminating beam may directly illuminate successive positions of the physical medium.

Synthetic optical holography

An apparatus and methods for nanoscale optical tomography based on back-scattering mode near-field scanning optical microscopy with a volumetric scan of the probe. The back-scattered data collected by a volumetric scan of the probe contains three-dimensional structural information of the sample, which enables reconstruction of the dielectric sample without other mechanical movements of the instrument.

Nanoscale optical tomography based on volume-scanning near-field microscopy

Growing community of inventors

Freidberg, Germany

Rainer Hillenbrand