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M Tollkühn1, P J Ritter1, M Schilling1

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Summary
This summary is machine-generated.

This study introduces a novel THz microscope using a Josephson junction on a cantilever for high-resolution spatial mapping of terahertz (THz) and microwave fields. The device enables detailed 3D field distribution analysis for various applications.

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Area of Science:

  • Physics
  • Electrical Engineering
  • Materials Science

Background:

  • Superconducting Josephson junctions are vital for quantum computing and voltage standards.
  • They also serve as sensitive detectors for high-frequency radiation and magnetic fields.
  • Existing methods for field distribution mapping have limitations in resolution and frequency range.

Purpose of the Study:

  • To develop a unique measurement setup for high-resolution spatial mapping of THz and microwave field distributions.
  • To demonstrate the capabilities of a THz microscope for analyzing electromagnetic radiation and magnetic fields.
  • To enable 3D visualization of field distributions with spectroscopic resolution.

Main Methods:

  • Utilized a single Josephson junction integrated onto a cantilever as the core sensing element.
  • Developed a novel THz microscope capable of measuring electromagnetic radiation from 1 GHz to 5 THz.
  • Implemented data evaluation techniques for creating three-dimensional visualizations of field distributions.

Main Results:

  • Successfully measured field distributions at 20 GHz and 1.4 THz.
  • Demonstrated spectroscopically resolved THz measurements.
  • Showcased the capability to measure static magnetic fields and perform topological scans.

Conclusions:

  • The developed THz microscope offers a versatile tool for high-resolution spatial measurements of electromagnetic fields.
  • The system provides accurate power and frequency measurements across a broad THz and microwave spectrum.
  • This technology has potential applications in sensing, imaging, and materials characterization at various temperatures.