Abstract
External pulse compression using a multipass gas cell (MPC) is an extremely powerful technique for shortening the duration of sub-ps laser pulses [1]. Despite its tremendous success and versatility, the MPC method faces a challenge of handling high energy due to an unfavourable geometrical scaling requiring a rapid increase of the distance separating concave mirrors, and the corresponding size of the vacuum chamber. In this contribution, we propose and experimentally demonstrate the feasibility of reducing the MPC length relative to the target pulse energy by arbitrarily increasing the beam spot sizes on the mirrors, which is achieved through adding a spatial chirp on the collimated output beam from a grating-pair pulse compressor in a fs Yb CPA system.
© 2023 IEEE
PDF ArticleMore Like This
Kevin Schwarz, Nazar Kovalenko, Victor Hariton, Kilian Fritsch, and Oleg Pronin
cd_p_30 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2023
Alan Omar, Tim Vogel, Martin Hoffmann, and Clara J. Saraceno
Th2.5 Ultrafast Optics (UFO) 2023
Martin Kaumanns, Dmitrii Kormin, Thomas Nubbemeyer, Vladimir Pervak, and Stefan Karsch
AM1I.4 CLEO: Science and Innovations (CLEO:S&I) 2021