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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 9: Novel Accelerator Concepts III and Hadron Accelerators
AKBP 9.7: Vortrag
Donnerstag, 3. April 2025, 15:30–15:45, ZHG004
100Hz repetition rate, high energy Ti:Sapphire amplifier for laser plasma acceleration — •Thomas Hülsenbusch, Timo Eichner, Man Jiang, Juan B. Gonzalez-Diaz, Adbullah Yousefi, Jelto Thesinga, Mikhail Pergament, Wim P. Leemans, Guido Palmer, and Andreas R. Maier — Deutsches Elektronen-Synchrotron DESY, Notkestrasse 81, 22607 Hamburg, Germany
To move Laser Plasma Acceleration (LPA) from a few-shot, proof-of-principle experiments to applications, it is necessary to increase the repetition rate of the driving laser to the kHz range. While it has been shown that Ti:Sapphire (Ti:Sa) lasers can deliver the high quality, high intensity pulses required for LPA, the high quantum defect of Ti:Sa poses a major challenge for high repetition rate operation. As a first step towards kHz operation, we here present experimental results on a 100Hz Ti:Sa amplifier that delivers pulses of >700 mJ energy, supporting a transform limited pulse duration of <30 fs. The thermal lens can be managed with cryogenic cooling of the laser crystal, allowing a high beam quality of M2 < 1.7 at 100Hz to be maintained. This laser will enable high repetition rate LPA experiments in the near future.
Keywords: Laser plasma acceleration; Titanium:Sapphire