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ST403 - Investigation of the Electrical Field Sensitivity of Sub-µm Y-Ba-Cu-O Detectors

Investigation of the Electrical Field Sensitivity of Sub‑µm Y-Ba-Cu-O Detectors
 Juliane Raasch1, Artem Kuzmin1, Petra Thoma1, Konstantin Ilin1,
Matthias Arndt1, Stefan Wuensch1, Member IEEE, Michael Siegel1,
Johannes Steinmann2, Anke-Susanne Müller2, Eleonore Roussel3
Clément Evain3, Christophe Szwaj3, Serge Bielawski3, Taro Konomi4,
Shin-ichi Kimura4, Masahiro Katoh4, Masahito Hosaka5,
Naoto Yamamoto5, Heishun Zen6, Kazumasa Iida7 and Bernhard Holzapfel8
1Institut für Mikro- und Nanoelektronische Systeme,
Karlsruhe Institute of Technology, 76187 Karlsruhe, Germany
2Laboratory for applications of synchrotron radiation,
Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
3Laboratoire de Physique des Lasers, Atomes et Molécules,
Université Lille 1, 59655 Villeneuve d’Ascq Cedex, France
4UVSOR Facility, Institute for Molecular Science, 444-8585 Okazaki, Japan
5Synchrotron Radiation Research Center, Nagoya University,
464-8603 Nagoya, Japan
6Institute of Advanced Energy, Kyoto University, 611-0011 Kyoto, Japan
7Leibniz Institute for Solid State and Materials Research Dresden,
01069 Dresden, Germany
8Institute for Technical Physics, Karlsruhe Institute of Technology,
76344 Eggenstein-Leopoldshafen, Germany
Abstract —The behavior of sub‑µm-sized thin-film YBa2Cu3O7‑x (YBCO) detectors under illumination with picosecond terahertz (THz) pulses was investigated. Real-time measurements with a temporal resolution of 15 ps full width at half maximum (FWHM) were performed at ANKA, the synchrotron facility of the KIT, and the UVSOR-III facility at the Institute of Molecular Science in Okazaki, Japan. The capability of YBCO detectors to reproduce the shape of a several picoseconds long THz pulse was demonstrated. Single-shot measurements adhering to a reversal of the direction of the electrical field of the THz radiation were carried out. They provided evidence for the electrical field sensitivity of the YBCO detector. Exploiting the electrical field sensitivity of the YBCO detector the effect of microbunching was observed at UVSOR‑III.
Keywords (Index Terms) — Yttrium barium copper oxide, electrical field sensitivity, THz detectors, Zero-bias detection, synchrotron radiation‎
IEEE/CSC & ESAS SUPERCONDUCTIVITY NEWS FORUM (global edition), October 2014.
Received August 29, 2014; Selected September 20, 2014.  Reference ST403; Category 4.
ASC2014 invited talk 1EOr1C-01; preliminary paper published online in IEEE Trans. Appl. Supercond. (IEEE XPLOREDOI 10.1109/TASC.2014.2365138, on October 27, 2014.