24 May 2022

Mixing laser- and X-ray-beams

Unlike fictional laser swords, real laser beams do not interact with each other when they cross – unless the beams meet within a suitable material allowing for nonlinear light-matter interaction. In such a case, wave mixing can give rise to beams with changed colors and directions.

Wave-mixing processes between different light beams are one cornerstone of the field of nonlinear optics, which is ...

19 May 2022

FLASH opens up new paths for surface research

Researchers from Universität Hamburg, European XFEL and DESY have succeeded in looking at details of molecular orbitals at DESY's free-electron laser FLASH. The team reports in the journal Nature Communications on the new method, which makes it possible to observe the temporal change of the wave function of molecules. These changes are crucial for reactions of molecules on surfaces and can lead to new insights into ...

04 May 2022

KFS: Synchrotron research for climate protection and energy transition

Synchrotron radiation shows us how materials are built up and how they work - also materials that we need to become less dependent on fossil fuels, for example in solar cells, in batteries and in the production of green hydrogen.

What influences the climate and how can we counteract climate change and cope with the consequences? Society must deal with these three central problems of climate change ...

14 April 2022

Nature's handedness in the focus of free-electron lasers

A research collaboration led by Markus Ilchen and Sadia Bari (both DESY) and Swedish researchers Vitali Zhaunerchyk (Gothenburg University) and Mats Larsson (Stockholm University) has received approximately 1.5 million euros for four years in research funding from the Röntgen Ångström Cluster (RÅC), a Swedish-German science collaboration. The team will use the funding to use free-electron lasers to get closer to ...

16 February 2022

Junior professorship for Andrea Trabattoni

There are very few people in the world who take a stab at watching and manipulating nuclear transitions by exploiting the surrounding electrons and tailored lasers. DESY’s Helmholtz young Investigators Group leader Andrea Trabattoni is one of them. He has just accepted a call as junior professor in Ultrafast Photoelectron Science at Leibniz University Hannover where he will join forces with their Ultrafast Laser ...

26 January 2022

DESY Photon Science Users' meeting 2022 - Online for the second time

From 21 to 28 January 2022, the DESY Photon Science Users' Meeting took place simultaneously with the users' meeting of the European XFEL. In total, more than 2000 researchers from all over the world registered to join the online event to discuss the latest research results. At the meeting, the directors of the two centres presented a "Joint Declaration of DESY and European XFEL", with which the two research centres ...

24 January 2022

Cosmic chemistry in the lab

Using DESY's free-electron laser FLASH, scientists have recreated some of the harsh environment of interstellar space in the lab and analysed the reaction of astrochemical molecules to these conditions. The results show a comprehensive picture of the dynamics of polycyclic aromatic hydrocarbons (PAH) under extreme ultraviolet radiation in a vacuum – resembling the cosmic environment between the stars of our ...

18 January 2022

Sub-picosecond metamagnetic phase transition in FeRh

Spintronics, the manipulation of electron spins and magnetic moments, is aimed at supplying an alternative to conventional electronics technology which uses the change of electronic states to store and transfer information using binary bits. At FLASH, an international research team, including the Central European Institute of Technology (CEITEC) in Brno (Czech Republic) and the University of Mainz, has now addressed ...

14 January 2022

Watching the charge move in photoexcited molecules

An international research team led by Markus Gühr’s group at the University of Potsdam performed laser experiments at FLASH to monitor charge motions in light-excited molecules of thiouracil, which is a modified nucleobase. This class of molecules has a variety of medical applications, including possible novel cancer therapies. Their basic research now published in Nature Communications opens up the possibility ...