8–10 Mar 2016
KIT Campus South
Europe/Berlin timezone

Ultra-fast YBCO detectors for single-shot THz spectroscopy of Coherent Synchrotron Radiation

Not scheduled
Bldg. 11.40, Tulla Hörsaal (KIT Campus South)

Bldg. 11.40, Tulla Hörsaal

KIT Campus South

Speaker

Dr Konstantin Ilin (IMS-KIT)

Summary

Coherent Synchrotron Radiation (CSR) in the THz frequency range generated by short electron bunches is a promising instrument for many applications such as spectroscopy and non-destructive imaging techniques [1]. The variation of temporal and spectral THz pulse shapes that is due to the so-called bursting phenomenon however requires a bunch-by-bunch resolution of the THz signal [2]. Therefore the use of ultra-fast and broadband THz detectors is essential.
A state-of-the-art detection system based on superconducting YBa2Cu3O7-x (YBCO) thin-films offers picosecond response times [3]. Patterning to sub-µm dimensions moreover ensures suitable detector sensitivity for the detection of single THz pulses [4]. In addition of picosecond response times and broadband readout the YBCO detection system offers zero-bias detection and electrical-field sensitivity [5].
By combining the well-established technology for broadband YBCO detectors with narrow-band THz filtering we aim at the single-shot spectroscopy of CSR. The approach that is currently under development consists of an on-chip 4-pixel detector array with integrated narrow-band antennas and simultaneous broadband readout of all four detectors [6]. First testing of a prototype of the single-shot THz spectrometer allowed for the simultaneous bunch-by-bunch observation of the bursting CSR signal at two different wavelengths.

References

[1] M. Abo-Bakr, et al., Phys. Rev. Lett. 90, 094801 (2003)
[2] S. Heifets, et al., Phys. Rev. ST Accel. Beams 5, 064401 (2002)
[3] P. Thoma, et al., Appl. Phys. Lett. 101, 142601 (2014)
[4] P. Thoma, et al., IEEE Trans. on Appl. Supercond. 23, 2400206 (2013)
[5] J. Raasch, et al., IEEE Trans. on Appl. Supercond. 25, 2300106 (2015)
[6] A. Schmid, et al., accepted to IEEE Trans. on Appl. Supercond.

Primary author

Mrs Juliane R (IMS-KIT)

Co-authors

Mr Alexander Schmid (IMS-KIT) Prof. Anke-Susanne Müller (LAS-KIT) Dr Artem Kuzmin (IMS-KIT) Prof. Bernhard Holzapfel (ITEP-KIT) Dr Jens Haenisch (ITEP-KIT) Mr Johannes Steinmann (LAS-KIT) Dr Konstantin Ilin (IMS-KIT) Mr Matthias Arndt (IMS-KIT) Prof. Michael Siegel (IMS-KIT) Mrs Miriam Brosi (LAS-KIT)

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