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Title: Photon diagnostics at the FLASH THz beamline

Journal Article · · Journal of Synchrotron Radiation (Online)
 [1];  [1];  [1];  [2];  [2];  [3];  [4];  [1];  [5];  [6];  [7];  [7];  [8];  [8];  [1];  [1];  [9];  [1]
  1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  2. Institute of Physics Belgrade, Belgrade (Serbia)
  3. Vinca Institute of Nuclear Sciences, Belgrade (Serbia); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  4. S. P. Pune Univ., Pune (India)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  6. Elettra – Sincrotrone Trieste SCpA, Trieste (Italy)
  7. Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden (Germany)
  8. European XFEL, Schenefeld (Germany)
  9. German Aerospace Center (DLR), Berlin (Germany); Technical Univ. of Berlin, Berlin (Germany)
+ Show Author Affiliations

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
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

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High-Field High-Repetition-Rate Sources for the Coherent THz Control of Matter journal February 2016
Simultaneous operation of two soft x-ray free-electron lasers driven by one linear accelerator journal June 2016
Resonant and nonresonant control over matter and light by intense terahertz transients journal August 2013
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Probing ultra-fast processes with high dynamic range at 4th-generation light sources: Arrival time and intensity binning at unprecedented repetition rates text January 2017
High-field high-repetition-rate sources for the coherent THz control of matter text January 2016
Exploring Dynamics in the Far-Infrared with Terahertz Spectroscopy journal June 2004

Cited By (4)

XUV-driven plasma switch for THz: new spatio-temporal overlap tool for XUV–THz pump–probe experiments at FELs journal January 2020
Pulse- and field-resolved THz-diagnostics at 4 t h generation lightsources journal January 2019
THz streak camera performance for single-shot characterization of XUV pulses with complex temporal structures text January 2020
XUV-driven plasma switch for THz: new spatio-temporal overlap tool for XUV–THz pump–probe experiments at FELs text January 2020

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Related Subjects

47 OTHER INSTRUMENTATION
FLASH
intense THz
THz diagnostic
electro-optic
FTIR