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Longitudinally polarized single-cycle terahertz pulses generated with high electric field strengths

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Article number221102
<mark>Journal publication date</mark>2016
<mark>Journal</mark>Applied Physics Letters
Issue number22
Volume108
Number of pages4
Publication statusPublished
Early online date31/05/16
Original languageEnglish

Abstract

We demonstrate the generation of single-cycle longitudinally polarized terahertz pulses with field
amplitudes in excess of 11 kV/cm using the interferometric recombination of two linearly polarized
terahertz beams. High field strength transversely polarized pulses were generated by optical rectification
in a matched pair of magnesium-oxide doped stoichiometric lithium niobate (MgO:SLN)
crystals with a reversal in the v
ð2Þ
333 orientation. The discontinuity in v
ð2Þ
333 produces a polarity flip in
the transverse field; the longitudinal field produced as a consequence of the transverse field discontinuity
was measured in the far-field. Both the spatial and temporal profiles of the measured longitudinally
polarized terahertz radiation were consistent with the propagation of the transverse
discontinuity.