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Q: Fachverband Quantenoptik und Photonik
Q 7: Poster I
Q 7.17: Poster
Montag, 6. März 2023, 16:30–19:00, Empore Lichthof
Transportable Laser System Employing Fourier Limited Picosecond Pulses for Laser Cooling of Relativistic Ion Beams — •Benedikt Langfeld1,2, Sebastian Klammes3, and Thomas Walther1,2 — 1Technische Universität Darmstadt — 2HFHF Darmstadt — 3GSI Helmholtzzentrum für Schwerionenforschung GmbH
Laser cooling of relativistic ion beams has been shown to be a promising technique to generate cold ion beams with a small velocity distribution. To strongly reduce intrabeam scattering, a well-known problematic effect for high-intensity ion beams which broadens the velocity distribution, pulsed laser systems with broad bandwidths can be employed.
In this work, we present our tunable high repetition rate UV laser system. We have developed a transportable master-oscillator-power-amplifier system, supplying Fourier transform limited pulses with a continuously adjustable pulse length between 50 and 735 ps and repetition rate of 1 to 10 MHz. With two SHG stages, the desired wavelength of 257 nm with up to 4 W average power can be achieved. The combination of the tunable seed laser (3 nm @ IR seed wavelength) and the large Doppler shift allows to easily match the output wavelength to the cooling transition of the ions.