XUV / IR Pulse Delay Unit — ufi-k2
UltraFast Innovations

K2 — XUV / IR Pulse Delay Unit (Customizable Double-Mirror)

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K2 is a XUV/IR pulse delay unit that uses UFI's XUV/soft-X-ray multilayer double mirrors. The coating can be customized for the desired XUV/soft-X-ray energy range and reflective properties.

The unit provides high-precision femtosecond-resolved delay between an XUV (or soft X-ray) pulse and a co-propagating IR pulse — essential for pump-probe experiments in attosecond science, photoemission spectroscopy, and time-resolved XUV-IR cross-correlation.

Key Product Features

  • Customizable XUV/soft-X-ray multilayer double-mirror coating
  • Independent delay control for XUV and IR arms
  • Femtosecond-resolution delay scanning
  • Vacuum-compatible
  • Compact form factor for integration into existing beamlines
  • Custom coating designs available for specific XUV/SXR energy ranges

Applications

  • Attosecond XUV-IR pump-probe spectroscopy
  • RABITT experiments
  • Time-resolved photoemission
  • High-harmonic-generation studies

Developed at the Max-Planck-Institute of Quantum Optics. UFI is a spin-off from LMU Munich and the Max Planck Society.

ModelsK2 Pulse Delay Unit
Operation modeXUV/IR pump-probe delay
Mirror typeXUV/SXR multilayer double mirror
Coating energy rangeCustomizable per project (typical 20–150 eV)
Delay resolutionFemtosecond-scale
Vacuum compatibilityYes (UHV available)
CustomizationCoating & geometry tailored per application
Coating reflectivity profile and energy range optimized per customer specification.
Contact UFI for project-specific configurations.

Source: UltraFast Innovations manufacturer datasheet. Download the brochure (PDF) from the Documents tab for full details.

Specification Sheet PDF — Download
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Product Family: XUV / Soft X-ray Instruments (4 variants)

Product ▴▾ SKU Size ▴▾ Clear Aperture ▴▾ Operating Wavelength ▴▾
NEPAL — Coherent Ultrabroadband XUV/Soft X-ray Light Source (HHG) — — —Contact
K2 — XUV / IR Pulse Delay Unit (Customizable Double-Mirror) Current — — —
EVEREST — Soft X-ray / XUV / VUV Spectrometer (1-200 nm, 6-1240 eV) — — —Contact
AURORA — XUV Phase Retarder / Quarter Waveplate (10-85 eV) — — —Contact