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  • Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference (EQEC 2023)
  • Technical Digest Series (Optica Publishing Group, 2023),
  • paper ca_p_2

Instability study of a high-power, high repetition rate fs-OPCPA driven tunable femtosecond UV source for FEL seeding

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Abstract

Tuneable femtosecond UV pulses at high pulse repetition rates and energies are of great interest for a variety of applications. Currently, the FLASH VUV/XUV FEL facility at DESY (Hamburg, Germany) is undergoing a major upgrade to become the first high repetition rate, fully coherent FEL light source worldwide (FLASH2020+) [1]. To reach this goal, the FLASH1 FEL beamline requires a high-power UV lasers system with a highly demanding and unprecedented combination of average power, tunability, pulse timing structure, UV beam quality and extremely low instability in wavelength drifts and jitter (< 2e-4 rms), pulse energy (< 2% rms) and pointing (< 20 µrad rms).

© 2023 IEEE

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