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TY - CONF AU - Mahnke, C. AU - Grosse-Wortmann, U. AU - Hartl, I. AU - Heyl, C.M. AU - Hua, Y. AU - Lamb, T. AU - Ma, Y. AU - Mohr, C. AU - Müller, J. AU - Salman, S.H. AU - Schulz, S. AU - Vidoli, C. AU - Çankaya, H. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Near-Infrared Laser System for Dielectric Laser Acceleration Experiments at SINBAD J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - The technique of dielectric laser acceleration (DLA) utilizes the strong field gradients generated by intense laser light near the surfaces of microscopic photonic structures, possibly allowing compact accelerator devices. We report on the infrared laser system at the SINBAD facility at DESY, where first DLA experiments with relativistic electrons pre-accelerated by the ARES linear accelerator started in late 2020. We constructed a low-noise Holmium fiber oscillator producing pulses at a wavelength of 2050 nm, seeding a Ho:YLF regenerative amplifier. Pulses of 2 mJ and 2 ps duration from the amplifier are transported over a distance of about 30 m to the DLA interaction point. The laser system is synchronized to the accelerator by locking the laser repetition rate to an RF master oscillator using an all-digital phase-locked loop, giving a residual timing jitter of about 45 fs. The digital locking scheme allows precise shifting of the relative timing between laser pulses and electrons without need for a dedicated optical delay line. It is planned to lock the system to the UV photocathode laser by means of an optical cross correlator further to improve the locking performance. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3596 EP - 3598 KW - laser KW - experiment KW - electron KW - timing KW - acceleration DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-WEPAB378 UR - https://jacow.org/ipac2021/papers/wepab378.pdf ER -