| Autor: |
Pohl, A., Semenov, A., Hübers, H.-W., Hoehl, A., Ries, M., Wüstefeld, G., Ulm, G., Ilin, K., Thoma, P., Siegel, M. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 2016, Vol. 119 Issue 11, p1-8, 8p, 2 Diagrams, 7 Graphs |
| Abstrakt: |
Decaying oscillations of the electric field in repetitive pulses of coherent synchrotron radiation in the terahertz frequency range was evaluated by means of time-resolving and correlation techniques. Comparative analysis of real-time voltage transients of the electrical response and interferograms, which were obtained with an ultrafast zero-bias Schottky diode detector and a Martin-Puplett interferometer, delivers close values of the pulse duration. Consistent results were obtained via the correlation technique with a pair of Golay Cell detectors and a pair of resonant polarisation-sensitive superconducting detectors integrated on one chip. The duration of terahertz synchrotron pulses does not closely correlate with the duration of single-cycle electric field expected for the varying size of electron bunches. We largely attribute the difference to the charge density oscillations in electron bunches and to the low-frequency spectral cut-off imposed by both the synchrotron beamline and the coupling optics of our detectors. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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