Second 'Wedding' of HHG and COLTRIMS

After a short “break-up” of COLTRIMS and HHG chamber and a slight change in position with respect to each other, they are now happily joined back together, matching better then ever. We also upgraded some parts of the HHG source and the “joint” between COLTRIMS and HHG chamber. Check out this post for more information.

During the last year we spent quite some time on fixing some technical problems with our HHG setup. The most sever one was XUV stray-light in the COLTRIMS chamber and photoelectrons created by XUV light hitting parts of the COLTRIMS which are not the ultracold gas jet.

We also used the last year for some first experiments where we send the XUV pulses from our high-flux HHG source into the coltrims for coicidence experiments. More information on this will follow soon in a publication.

Moreover, we used the time to improved the setup with chirped mirrors for compression of the 515nm pulses we use for generation of the HHG, installed more stable mirror-holders for pump-probe experiments and so on. With all these improvements and the laser being operational again, we’re looking to conduct some exciting experiments in the beginning of 2025. Stay tuned!