FELIX Laboratory

FELIX Laboratory
Name	FELIX Laboratory
Established	1996
Location	Netherlands
Type	Research laboratory
Affiliations	Radboud University Nijmegen, Stichting voor Fundamenteel Onderzoek der Materie
Fields	Atomic physics, molecular physics, spectroscopy, free-electron laser research

FELIX Laboratory FELIX Laboratory is a Dutch national research facility specializing in free-electron laser science, molecular spectroscopy, and infrared radiation research. Located on a university campus, the laboratory provides tunable long-wavelength infrared and terahertz radiation to international researchers from academia and industry. It supports experiments across atomic and molecular physics and links to initiatives in chemical dynamics, astrochemistry, and materials science.

Overview

The laboratory operates as a user facility that offers access to pulsed and continuous tunable radiation sources for experiments in Netherlands, Germany, United Kingdom, France, United States, Japan, Canada, Italy, Spain, Sweden, Switzerland, Belgium, Denmark, Norway, Finland, Austria, Israel, Australia, China, India, Russia, Brazil, South Korea, Poland, Czech Republic, Hungary, Portugal, Greece, Turkey, Ireland, Romania, Slovakia, Lithuania, Latvia, Estonia, New Zealand, South Africa, Argentina, Chile, Mexico, Singapore, Malaysia, Thailand, Philippines, United Arab Emirates, Saudi Arabia, Egypt, Morocco, Algeria and regional partners. It serves research groups focused on photophysics, photochemistry and spectroscopic diagnostics, enabling collaborations with institutions such as Radboud University Nijmegen, FOM Institute AMOLF, Max Planck Society, European Molecular Biology Laboratory, CERN, European Space Agency, NASA, National Institute of Standards and Technology, Lawrence Berkeley National Laboratory, Rutherford Appleton Laboratory, SLAC National Accelerator Laboratory, DESY, Paul Scherrer Institute, University of California, Berkeley, Massachusetts Institute of Technology, Stanford University, University of Oxford, University of Cambridge, Imperial College London, ETH Zurich, University of Tokyo, Tsinghua University, Peking University.

Facilities and Instrumentation

The facility houses multiple free-electron lasers, tunable optical parametric amplifiers and complementary beamlines used for high-resolution spectroscopy, reaction dynamics and condensed-matter studies. Instrumentation includes cryogenic ion traps, velocity-map imaging spectrometers, Fourier-transform spectrometers and matrix-isolation setups, supporting experiments historically associated with groups at Leiden University, Utrecht University, University of Groningen, Vrije Universiteit Amsterdam, Delft University of Technology, Eindhoven University of Technology, University of Twente, Max Planck Institute for Dynamics and Self-Organization, Institute of Photonic Sciences, Oxford Brookes University, Harvard University, Columbia University, Princeton University, Yale University, Johns Hopkins University, University of Illinois Urbana–Champaign, University of Michigan, Carnegie Mellon University, Cornell University, University of Chicago, Northwestern University, University of Texas at Austin, University of Washington.

Beam diagnostics and control systems are compatible with ultrafast pump–probe setups and coincidence detection, enabling studies comparable to experiments at European XFEL, LCLS, FLASH, SwissFEL, ELI Beamlines, SPring-8, SOLEIL, BESSY II, ANKA and synchrotron facilities such as ESRF and Diamond Light Source. The laboratory supports polarization control, wavelength calibration against standards maintained by NIST and intensity-stabilized delivery for precision spectroscopy used by teams from Max Planck Institute for Chemical Physics of Solids and Weizmann Institute of Science.

Research Programs and Applications

Research programs span molecular photophysics, astrochemical reaction pathways, state-resolved reaction dynamics, and cluster and nanoparticle spectroscopy. Projects investigate processes relevant to Intergovernmental Panel on Climate Change–related atmospheric chemistry, European Space Agency–supported space instrumentation calibration, and interstellar molecule formation studied alongside groups at Leiden Observatory and Max Planck Institute for Astronomy. Experimental outcomes inform theoretical work by researchers at Institute for Advanced Study, Perimeter Institute, Centre National de la Recherche Scientifique, Max Planck Institute for Quantum Optics, Argonne National Laboratory and Los Alamos National Laboratory.

Applied research includes sensor development for remote sensing, materials characterization relevant to European Technology Platform priorities, and infrared photochemistry relevant to semiconductor processing used in collaborations with ASML Holding, Philips, IBM, Intel Corporation and Siemens. The laboratory contributes to studies on greenhouse gas spectroscopy, isotopologue identification, and catalytic surface processes of interest to Shell plc, TotalEnergies, BASF, AkzoNobel and governmental research institutes such as Netherlands Organisation for Applied Scientific Research.

Collaborations and Partnerships

The facility maintains formal partnerships and user-access agreements with European research infrastructures and university consortia, and coordinates joint projects funded by the European Research Council, Horizon 2020, Horizon Europe, Marie Skłodowska-Curie Actions, Dutch Research Council, Deutsche Forschungsgemeinschaft, National Science Foundation, Japan Society for the Promotion of Science and national funding agencies. It is engaged in bilateral exchanges with laboratories at Université Paris-Saclay, University of Milan, University of Barcelona, Technical University of Munich, Karlsruhe Institute of Technology and University of Heidelberg.

Industrial partnerships range from instrument development with Thorlabs and Newport Corporation to collaborative measurement campaigns with aerospace and instrumentation companies including Thales Group, Airbus, Rheinmetall, Rolls-Royce Holdings and measurement standard bodies such as International Organization for Standardization committees and national metrology institutes.

History and Development

The laboratory emerged from initiatives in European free-electron laser development in the late 20th century, building on accelerator physics advances linked to groups at CERN and accelerator technology developed at DESY and SLAC National Accelerator Laboratory. Its early phases involved collaborations with Dutch physics departments and national institutes, followed by expansions funded through national science foundations and European infrastructure calls. Over time the infrastructure was upgraded to extend wavelength coverage into the terahertz and far-infrared domains, aligning with roadmaps published by European Strategy Forum on Research Infrastructures and coordinated with programs at Max Planck Society and Helmholtz Association.

Key milestones include commissioning of multiple beamlines, adoption of ultrafast pump–probe capabilities, and hosting of international user workshops attended by scientists affiliated with Royal Society, European Physical Society, American Physical Society, Optica (society), International Union of Pure and Applied Physics and leading universities.

Education, Training, and Outreach

The laboratory runs doctoral and postdoctoral training programs in partnership with university doctoral schools and graduate programmes at Radboud University Nijmegen, Leiden University, Utrecht University and technical universities across Europe. It hosts hands-on courses, summer schools and technical training for accelerator and laser technicians, attracting participants from institutions including CERN School of Computing, DESY Summer Student Programme, European XFEL PhD Program, EMBL International PhD Programme and industry trainees from ASML and Philips. Outreach activities include public open days, guest lectures connected to science museums and contributions to national science festivals and European research outreach coordinated with European Research Council and regional cultural partners.

Category:Research laboratories in the Netherlands