Observation of coherent pulses in the sub-THz range at DELTA

Mai, C., Ungelenk, P., Bahnsen, F. H., Bolsinger, M., Hilbrich, S., Höner, M., Huck, M., Khan, S., Meyer Auf Der Heide, A., Molo, R., Rast, H., Shayeganrad, G., Brosi, M., Kehrer, B., Müller, A. S., Nasse, M. J., Schönfeldt, P., Schütze, P., Walther, S. and Huck, H. (2015) Observation of coherent pulses in the sub-THz range at DELTA. In 6th International Particle Accelerator Conference, IPAC 2015. Joint Accelerator Conferences Website. pp. 823-826 .

Abstract

Coherent ultrashort THz pulses induced by a laserelectron interaction are routinely produced and observed at DELTA, a 1.5-GeV synchrotron light source operated by the TU Dortmund University. The turn-by-turn evolution of the radiation spectrum is known to shift to the sub-THz regime after the initial laser-electron interaction. Recently, an ultrafast YBCO-based THz detector has been permanently installed and a Schottky diode has been tested at the THz beamline. Measurements with these detectors showing the temporal evolution of the coherent signals after several revolutions are presented. Furthermore, the concept of a recently designed Fourier-transform spectrometer optimized for the sub-THz region is shown.

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Contributors

Author: G. Shayeganrad

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