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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.

Authors:
;  [1];  [2]
  1. School of Physics and Astronomy and the Photon Science Institute, The University of Manchester, Manchester M13 9PL (United Kingdom)
  2. The Cockcroft Institute, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Warrington WA4 4AD (United Kingdom)
Publication Date:
OSTI Identifier:
22391929
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 105; Journal Issue: 19; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; ANTENNAS; LASERS; POLARIZATION; PULSES; THZ RANGE

Citation Formats

Cliffe, M. J., E-mail: Matthew.Cliffe@manchester.ac.uk, Rodak, A., Graham, D. M., The Cockcroft Institute, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Warrington WA4 4AD, Jamison, S. P., and Accelerator Science and Technology Centre, Science and Technology Facilities Council, Darebsury Laboratory, Keckwick Lane, Daresbury, Warrington WA4 4AD. Generation of longitudinally polarized terahertz pulses with field amplitudes exceeding 2 kV/cm. United States: N. p., 2014. Web. doi:10.1063/1.4901904.
Cliffe, M. J., E-mail: Matthew.Cliffe@manchester.ac.uk, Rodak, A., Graham, D. M., The Cockcroft Institute, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Warrington WA4 4AD, Jamison, S. P., & Accelerator Science and Technology Centre, Science and Technology Facilities Council, Darebsury Laboratory, Keckwick Lane, Daresbury, Warrington WA4 4AD. Generation of longitudinally polarized terahertz pulses with field amplitudes exceeding 2 kV/cm. United States. https://doi.org/10.1063/1.4901904
Cliffe, M. J., E-mail: Matthew.Cliffe@manchester.ac.uk, Rodak, A., Graham, D. M., The Cockcroft Institute, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Warrington WA4 4AD, Jamison, S. P., and Accelerator Science and Technology Centre, Science and Technology Facilities Council, Darebsury Laboratory, Keckwick Lane, Daresbury, Warrington WA4 4AD. 2014. "Generation of longitudinally polarized terahertz pulses with field amplitudes exceeding 2 kV/cm". United States. https://doi.org/10.1063/1.4901904.
@article{osti_22391929,
title = {Generation of longitudinally polarized terahertz pulses with field amplitudes exceeding 2 kV/cm},
author = {Cliffe, M. J., E-mail: Matthew.Cliffe@manchester.ac.uk and Rodak, A. and Graham, D. M. and The Cockcroft Institute, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Warrington WA4 4AD and Jamison, S. P. and Accelerator Science and Technology Centre, Science and Technology Facilities Council, Darebsury Laboratory, Keckwick Lane, Daresbury, Warrington WA4 4AD},
abstractNote = {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.},
doi = {10.1063/1.4901904},
url = {https://www.osti.gov/biblio/22391929}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 19,
volume = 105,
place = {United States},
year = {Mon Nov 10 00:00:00 EST 2014},
month = {Mon Nov 10 00:00:00 EST 2014}
}