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FLASH free electron laser pump-probe laser concept based on spectral broadening of high-power ytterbium picosecond systems in multi-pass cells

Viotti, Anne-Lise LU orcid ; Alisauskas, Skirmantas ; Seidel, Marcus ; Tajalli, Ayhan ; Manschwetus, Bastian ; Cankaya, Huseyin ; Jurkus, K ; Sinkus, V and Hartl, Ingmar (2023) In Review of Scientific Instruments 94(2).
Abstract
Within the FLASH2020+ upgrade, the pump-probe laser capabilities of the extreme ultraviolet and soft x-ray free-electron laser (XFEL) FLASH in Hamburg will be extended. In particular, providing wavelength tunability, shorter pulse durations, and reduced arrival time jitter will increase the scientific opportunities and the time resolution for the XFEL-optical laser pump-probe experiments. We present here a novel concept for the pump-probe laser at FLASH that is based on the post-compression of picosecond pulses emitted from high-power Ytterbium:YAG slab amplifiers. Flexible reduction of the pulse duration is facilitated by spectral broadening in pressure-tunable multi-pass cells. As an application, we show the pumping of a commercial... (More)
Within the FLASH2020+ upgrade, the pump-probe laser capabilities of the extreme ultraviolet and soft x-ray free-electron laser (XFEL) FLASH in Hamburg will be extended. In particular, providing wavelength tunability, shorter pulse durations, and reduced arrival time jitter will increase the scientific opportunities and the time resolution for the XFEL-optical laser pump-probe experiments. We present here a novel concept for the pump-probe laser at FLASH that is based on the post-compression of picosecond pulses emitted from high-power Ytterbium:YAG slab amplifiers. Flexible reduction of the pulse duration is facilitated by spectral broadening in pressure-tunable multi-pass cells. As an application, we show the pumping of a commercial optical parametric amplifier with 150 fs post-compressed pulses. By means of an additional difference frequency generation stage, tunable spectral coverage from 1.3 to 16 μm is reached with multi-μJ, sub-150 fs pulses. Finally, a modular reconfiguration approach to the optical setups close to the free-electron laser instruments is implemented. This enables fast installation of the nonlinear frequency converters at the end stations for user operation and flexibility between different instruments in the two experimental halls. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Review of Scientific Instruments
volume
94
issue
2
publisher
American Institute of Physics (AIP)
external identifiers
  • scopus:85147922397
ISSN
1089-7623
DOI
10.1063/5.0131717
language
English
LU publication?
yes
id
22a62d44-e9c9-4ca9-9d3a-5d8e2ccd4fcf
date added to LUP
2025-05-28 08:37:46
date last changed
2025-05-29 04:01:52
@article{22a62d44-e9c9-4ca9-9d3a-5d8e2ccd4fcf,
  abstract     = {{Within the FLASH2020+ upgrade, the pump-probe laser capabilities of the extreme ultraviolet and soft x-ray free-electron laser (XFEL) FLASH in Hamburg will be extended. In particular, providing wavelength tunability, shorter pulse durations, and reduced arrival time jitter will increase the scientific opportunities and the time resolution for the XFEL-optical laser pump-probe experiments. We present here a novel concept for the pump-probe laser at FLASH that is based on the post-compression of picosecond pulses emitted from high-power Ytterbium:YAG slab amplifiers. Flexible reduction of the pulse duration is facilitated by spectral broadening in pressure-tunable multi-pass cells. As an application, we show the pumping of a commercial optical parametric amplifier with 150 fs post-compressed pulses. By means of an additional difference frequency generation stage, tunable spectral coverage from 1.3 to 16 μm is reached with multi-μJ, sub-150 fs pulses. Finally, a modular reconfiguration approach to the optical setups close to the free-electron laser instruments is implemented. This enables fast installation of the nonlinear frequency converters at the end stations for user operation and flexibility between different instruments in the two experimental halls.}},
  author       = {{Viotti, Anne-Lise and Alisauskas, Skirmantas and Seidel, Marcus and Tajalli, Ayhan and Manschwetus, Bastian and Cankaya, Huseyin and Jurkus, K and Sinkus, V and Hartl, Ingmar}},
  issn         = {{1089-7623}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{Review of Scientific Instruments}},
  title        = {{FLASH free electron laser pump-probe laser concept based on spectral broadening of high-power ytterbium picosecond systems in multi-pass cells}},
  url          = {{http://dx.doi.org/10.1063/5.0131717}},
  doi          = {{10.1063/5.0131717}},
  volume       = {{94}},
  year         = {{2023}},
}