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Proceedings Paper

TeraFERMI beamline as a powerful tool for nonlinear ultrafast studies on Dirac materials (Conference Presentation)
Author(s): Paola Di Pietro; Nidhi Adhlakha; Federica Piccirilli; Stefano Lupi; Andrea Perucchi

Paper Abstract

TeraFERMI is a beamline built up in 2015 at the Free Electron Laser (FEL) Fermi at Elettra in Trieste (Italy). Fermi is a seeded FEL that works in a single pass-single bunch mode at 10 or 50 Hz, covering the spectral range from 100 to 4 nm. TeraFERMI is based on a Coherent Transition Radiation source that provides high intense THz electric field in the MV/cm range. Such a THz electric field can push nonlinear materials well into their nonlinear regime. The beamline experimental setup fulfills the capability to address nonlinear regime by measuring both fluence-dependent transmission/reflection spectra and pump-probe response. A class of materials particularly studied at TeraFERMI is that of Topological Insulators. Indeed, thanks to their Dirac massless carriers of their conductive surface, topological insulators show nonlinear THz behavior similar to the case of graphene.

Paper Details

Date Published: 12 September 2019
Proc. SPIE 11124, Terahertz Emitters, Receivers, and Applications X, 111240C (12 September 2019); doi: 10.1117/12.2526718
Show Author Affiliations
Paola Di Pietro, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
Nidhi Adhlakha, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
Federica Piccirilli, Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche (Italy)
Stefano Lupi, Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche (Italy)
Sapienza Univ. di Roma (Italy)
Andrea Perucchi, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)

Published in SPIE Proceedings Vol. 11124:
Terahertz Emitters, Receivers, and Applications X
Manijeh Razeghi; Alexei N. Baranov; Miriam S. Vitiello, Editor(s)

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