Spectroscopy of Cold Molecules

The Spectroscopy of Cold Molecules department develops and uses unique experimental techniques to control, collide and image individual molecules in the gas-phase. 


What happens when two molecules collide? How do chemical reactions occur and on what timescales? In which ways do molecules exchange or dissipate energy - and how are all of these fundamental processes influenced by the underlying molecular structure? Our research aims to answer these questions, focusing on inelastic molecular collisions, fundamental chemical processes at ultrafast timescales, and the understanding of chemical reactions on the molecular level. 

Laser Physics and Cold Molecules researcher
In my research I have the best of both worlds: using physics tools to watch chemistry in action.
Daniel Horke
Daniel Horke Assistant Professor, Spectroscopy of Cold Molecules Read Daniel's story
I am fascinated by studying small molecules and atoms at the highest possible level of detail.
Jolijn Onvlee
Jolijn Onvlee Assistant Professor, Spectroscopy of Cold Molecules Read Jolijn's story

Research methods

In our research, we use Stark and Zeeman decelerators, electrostatic deflectors and state selectors, ultrafast and free-electron laser sources, and charged-particle imaging detectors. These allow us to control properties such as the velocity, quantum state, and orientation of individual molecules in a molecular beam and enable the study of molecular processes in unexplored regimes and with unprecedented precision.



No content available


No content available

Contact information

Postal address
Postbus 9010