Green pumplaser for upgrading the MuCLS enhancement cavity

• Subject Area: Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: Funded in 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 445390233

Since its comissioning in October 2015, the Munich compact Light Source (MuCLS) delivers a vast amount of scientific publications by producing relevant results using X-rays via inverse Compton scattering with a near-infrared Laser. The development of a "green" laser enhancement cavity targets at proliferating further success. By doubling the frequency of the light source for the cavity the energy of the produced X-rays will be doubled. This will significantly broaden the range of applications of the machine. To our knowledge, such a cavity with the necessary enhancement factor does not exist an will be developed at the chair of Laser- and X-ray Physics, E11, at the TU Munich. Once the power and stability have been shown the cavity will be integrated in the MuCLS. While the sample size is currently limited to a few millimeters (especially at samples with high concentration of minerals, e.g. bones) the upgrade will allow for the investigation of samples with higher absorption like full bones, as a human knee. Users have already expressed their interest in the investigation of other sample types with larger size and absorption. These are e.g.: geological samples (oil in porous stone), historical samples (fossiles, historical artifacts) or samples from material scientific interest which can be scanned in operando using higher X-ray energies.

• DFG Programme: Major Research Instrumentation
• Major Instrumentation: Grüner Pumplaser für das Upgrade der Überhöhungskavität für MuCLS.
• Instrumentation Group: 5700 Festkörper-Laser
• Applicant Institution: Technische Universität München (TUM)
• Leader: Professor Dr. Reinhard Kienberger