Photon diagnostics at the FLASH THz beamline
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- Institute of Physics Belgrade, Belgrade (Serbia)
- Vinca Institute of Nuclear Sciences, Belgrade (Serbia); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- S. P. Pune Univ., Pune (India)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Elettra – Sincrotrone Trieste SCpA, Trieste (Italy)
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden (Germany)
- European XFEL, Schenefeld (Germany)
- German Aerospace Center (DLR), Berlin (Germany); Technical Univ. of Berlin, Berlin (Germany)
The THz beamline at FLASH, DESY, provides both tunable (1–300 THz) narrow-bandwidth (∼10%) and broad-bandwidth intense (up to 150 uJ) THz pulses delivered in 1 MHz bursts and naturally synchronized with free-electron laser X-ray pulses. Combination of these pulses, along with the auxiliary NIR and VIS ultrashort lasers, supports a plethora of dynamic investigations in physics, material science and biology. The unique features of the FLASH THz pulses and the accelerator source, however, bring along a set of challenges in the diagnostics of their key parameters: pulse energy, spectral, temporal and spatial profiles. Here, these challenges are discussed and the pulse diagnostic tools developed at FLASH are presented. In particular, a radiometric power measurement is presented that enables the derivation of the average pulse energy within a pulse burst across the spectral range, jitter-corrected electro-optical sampling for the full spectro-temporal pulse characterization, spatial beam profiling along the beam transport line and at the sample, and a lamellar grating based Fourier transform infrared spectrometer for the on-line assessment of the average THz pulse spectra. Corresponding measurement results provide a comprehensive insight into the THz beamline capabilities.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1528873
- Journal Information:
- Journal of Synchrotron Radiation (Online), Vol. 26, Issue 3; ISSN 1600-5775
- Publisher:
- International Union of CrystallographyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
XUV-driven plasma switch for THz: new spatio-temporal overlap tool for XUV–THz pump–probe experiments at FELs
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journal | January 2020 |
Pulse- and field-resolved THz-diagnostics at 4 t h generation lightsources
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journal | January 2019 |
THz streak camera performance for single-shot characterization of XUV pulses with complex temporal structures
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text | January 2020 |
XUV-driven plasma switch for THz: new spatio-temporal overlap tool for XUV–THz pump–probe experiments at FELs
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text | January 2020 |
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