Research using FELBE

The free-electron laser (FEL) at ELBE (= FELBE) delivers coherent, intense, spectrally narrow, and pulsed beams in the mid and far infrared regions. The radiation is spectrally tunable in the wavelength range from 5 µm to 250 µm with pulse durations in the picosecond to sub-picosecond range and energies of up to several µJ per pulse.

→ Details about the FEL and the user operation at FELBE⁽¹⁾

FELBE radiation is used for a variety of experimental fields

• Investigation of semiconductors, quantum structures, and 2D-materials⁽²⁾
• Investigation of soft matter and biological materials
• Research on superconductors
• THz-induced phase transitions
• Nonlinear THz spectroscopy, THz nonlinear optics
• Cyclotron resonance measurements in pulsed magnetic fields⁽³⁾
• Electron paramagnetic resonance

→ FEL-related publications⁽⁴⁾

The following experimental techniques are available

• Pump-probe experiments at mid-infrared wavelengths and terahertz frequencies
  Synchronized tabletop laser systems are also available for two-color pump-probe experiments.
• Optical sideband generation
• Scattering scanning near-field infrared microscopy (s-SNIM)⁽⁵⁾
• Time-resolved photoluminescence
• Magnetospectroscopy
• Infrared and far-infrared spectroscopy in pulsed magnetic fields⁽⁶⁾

→ User labs at FELBE⁽⁷⁾

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https://www.hzdr.de/db/Cms?pOid=10552

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