Generation of longitudinally polarized terahertz pulses with field amplitudes exceeding 2 kV/cm

Matthew J Cliffe; Aniela Rodak; Darren M Graham; Steven P Jamison

doi:10.1063/1.4901904

Generation of longitudinally polarized terahertz pulses with field amplitudes exceeding 2 kV/cm

Matthew J Cliffe, Aniela Rodak, Darren M Graham, Steven P Jamison

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Abstract

We demonstrate the generation of near-single cycle longitudinally polarized terahertz radiation using a large-area radially biased photoconductive antenna with a longitudinal field amplitude in excess of 2 kV/cm. The 76 mm diameter antenna was photo-excited by a 0.5 mJ amplified near-infrared femtosecond laser system and biased with a voltage of up to 100 kV applied over concentric electrodes. Amplitudes for both the transverse and longitudinal field components of the source were measured using a calibrated electro-optic detection scheme. By tightly focusing the radiation emitted from the photoconductive antenna, we obtained a maximum longitudinal field amplitude of 2.22 kV/cm with an applied bias field of 38.5 kV/cm.

Original language	English
Journal	Applied Physics Letters
Volume	105
Issue number	10
DOIs	https://doi.org/10.1063/1.4901904
Publication status	Published - 12 Nov 2014

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10.1063/1.4901904Licence: CC BY

APL105-191112-2014_author accepted manuscriptAccepted author manuscript, 1.31 MB

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title = "Generation of longitudinally polarized terahertz pulses with field amplitudes exceeding 2 kV/cm",

abstract = "We demonstrate the generation of near-single cycle longitudinally polarized terahertz radiation using a large-area radially biased photoconductive antenna with a longitudinal field amplitude in excess of 2 kV/cm. The 76 mm diameter antenna was photo-excited by a 0.5 mJ amplified near-infrared femtosecond laser system and biased with a voltage of up to 100 kV applied over concentric electrodes. Amplitudes for both the transverse and longitudinal field components of the source were measured using a calibrated electro-optic detection scheme. By tightly focusing the radiation emitted from the photoconductive antenna, we obtained a maximum longitudinal field amplitude of 2.22 kV/cm with an applied bias field of 38.5 kV/cm.",

author = "Cliffe, {Matthew J} and Aniela Rodak and Graham, {Darren M} and Jamison, {Steven P}",

year = "2014",

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doi = "10.1063/1.4901904",

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volume = "105",

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T1 - Generation of longitudinally polarized terahertz pulses with field amplitudes exceeding 2 kV/cm

AU - Cliffe, Matthew J

AU - Rodak, Aniela

AU - Graham, Darren M

AU - Jamison, Steven P

PY - 2014/11/12

Y1 - 2014/11/12

N2 - We demonstrate the generation of near-single cycle longitudinally polarized terahertz radiation using a large-area radially biased photoconductive antenna with a longitudinal field amplitude in excess of 2 kV/cm. The 76 mm diameter antenna was photo-excited by a 0.5 mJ amplified near-infrared femtosecond laser system and biased with a voltage of up to 100 kV applied over concentric electrodes. Amplitudes for both the transverse and longitudinal field components of the source were measured using a calibrated electro-optic detection scheme. By tightly focusing the radiation emitted from the photoconductive antenna, we obtained a maximum longitudinal field amplitude of 2.22 kV/cm with an applied bias field of 38.5 kV/cm.

AB - We demonstrate the generation of near-single cycle longitudinally polarized terahertz radiation using a large-area radially biased photoconductive antenna with a longitudinal field amplitude in excess of 2 kV/cm. The 76 mm diameter antenna was photo-excited by a 0.5 mJ amplified near-infrared femtosecond laser system and biased with a voltage of up to 100 kV applied over concentric electrodes. Amplitudes for both the transverse and longitudinal field components of the source were measured using a calibrated electro-optic detection scheme. By tightly focusing the radiation emitted from the photoconductive antenna, we obtained a maximum longitudinal field amplitude of 2.22 kV/cm with an applied bias field of 38.5 kV/cm.

U2 - 10.1063/1.4901904

DO - 10.1063/1.4901904

M3 - Article

VL - 105

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 10

ER -

Generation of longitudinally polarized terahertz pulses with field amplitudes exceeding 2 kV/cm

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