The University of Regensburg (client) plans to procure a near-field microscope based on the scattered light principle (s-SNOM) that can also be operated in conductive-AFM mode for local electrical transport measurements and in Kelvin probe mode for determining the local work function. In the s-SNOM, spectrally broadband THz radiation is to be coupled from a storage ring. Near-field spectroscopy with broadband radiation must be performed via an asymmetric Michelson interferometer with integrated scanning probe using Fourier transform spectroscopy, so that the backscattered electric field can be detected in amplitude and phase. In addition, the device to be purchased must have an application programming interface in order to be able to carry out complex measurement sequences. The coupling and coupling optics must also have a particularly high numerical aperture (NA).

Streulichtnahfeldmikroskop FT-SNOM@THz