Terahertz wave generation via optical rectification from multiferroic BiFeO3

Details Terahertz wave generation via optical rectification from multiferroic BiFeO3 Terahertz wave generation via optical rectification from multiferroic BiFeO3

2008-11-06

arxiv.org/abs/0811.1004v1

Physics

Condensed Matter

Materials Science

accepted for publication in Applied Physics Letters

Scientific paper

10.1063/1.3036526

We detected broadband coherent terahertz (THz) emission from multiferroic BiFeO3 after illuminating a high-quality bulk single ferroelectric domain crystal with a ~100 fs optical pulse. The dependence of the emitted THz waveform on the energy and polarization of the optical pulse is consistent with the optical rectification mechanism of THz emission. The THz emission provides a sensitive probe of the electric polarization state of BiFeO3, enabling applications in ferroelectric memories and ferroelectric domain imaging. We also report room-temperature THz optical constants of BiFeO3.

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