maxLIGHT pro

high-efficiency spectrometer

  • flat-field grazing-incidence spectrometer

  • highest efficiency due to proprietary no-slit design

  • wavelength range from 1 to 200 nm

  • integrated beamprofiler

  • modular, turn-key design

maxLIGHT offers maximum light collection and the highest efficiency in the industry due to its no-slit design. Aberration-corrected flat-field wavelength coverage spans 1nm to 200nm with extensive spectral bandwidths, e. g. 5-80nm per individual grating.

The modular design matches a variety of experimental geometries and configurations. maxLIGHT features an integrated slit holder and filter insertion unit, as well as a motorized grating positioning.

Detector options include both XUV CCDs for highest resolution and dynamic range, and MCP/CMOS detectors for broadest wavelength coverage and gated / intensified detection. Please contact us to discuss your needs.

Customized derivatives of our maxLIGHT spectrometer are also available.

No-slit design

The proprietary spectrometer design by HP Spectroscopy uses direct source imaging. Consequently, a narrow entrance slit is not needed and light collection is maximized. Comparing with traditional spectrometer architectures, a factor of 20 more light reaches the spectrometer detector. The architecture also greatly increases day-to-day operation robustness.


maxLIGHT pro: spectrometer and beamprofiler


No-slit spectrometer architecture

white paper


HHG characterization by maxLIGHT XUV (left panel) in a coincidence spectroscopy application using attosecond XUV pulses.

High-order harmonics originate from single photon transitions (blue arrows), whereas two-photon transitions with XUV and IR light result in sidebands in the photoelectron spectrum (right panel).

J. Vos et al, Orientation-dependent stereo Wigner time delay

and electron localization in a small molecule

Science 360 1326-1330 (2018)


HHG spectrum measured by maxLIGHT XUV (right panel) and spectrum of the fundamental 25fs-pulses, broadened in a kagome-PCF (left panel). The effect of soliton self-frequency blue-shifting on HHG is clearly visible with increasing pump energy.

F. Tani et al, Continuously wavelength-tunable high harmonic generation via soliton dynamics

Opt. Lett. 42 1768-1771 (2017)


Measurement demonstrating the improved signal strength. With the same signal strength, the resolution of maxLIGHT (solid lines) is significantly higher compared with a standard spectrometer
(dotted lines). For equivalent resolution, standard technology would require a narrow slit setting and thus a significant degradation in signal strength.

C. Hauri et al, High-Harmonic Radiation for seeding the

Swiss Free Electron Laser
Andor Learning (2016)


HHG spectrum in the cut-off region at 150kHz repetition rate measured with maxLIGHT XUV. The variation of the CEP shows disappearance of modulations for some CEP settings, indicating an isolated attosecond pulse.      



M. Krebs et al, Towards isolated attosecond pulses at

megahertz repetition rates

Nature Photonics 7 555–559 (2013)


Measurement demonstrating the resolving power of maxLIGHT. The shown high harmonic spectrum is generated by the interaction of a single femtosecond laser pulse with a solid target and subsequent spectral filtering. The substructure inherent to the generation process is clearly resolved by the XUV spectrometer.

L. Waldecker et al, Focusing of high order harmonics from solid density plasmas

Plasma Phys. Control. Fusion 53 124021 (2011)


  • High-harmonic generation sources

  • Attosecond science

  • Intense laser-matter interaction

  • Free-electron lasers

  • Laser and discharge produced plasma sources

  • X-ray lasers

  • Laser driven secondary sources