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Applied Physics Letters / Volume 96 / Issue 23 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 96, 231114 (2010); http://dx.doi.org/10.1063/1.3449132 (3 pages)

Upconversion of a relativistic Coulomb field terahertz pulse to the near infrared

S. P. Jamison1, G. Berden2, P. J. Phillips3,4, W. A. Gillespie4, and A. M. MacLeod5

1Accelerator Science and Technology Center, STFC Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
2FOM Institute for Plasma Physics Rijnhuizen, Edisonbaan 14, 3439 MN Nieuwegein, The Netherlands
3Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
4Carnegie Laboratory of Physics, University of Dundee, Dundee DD1 4HN, United Kingdom
5School of Computing and Engineering Systems, University of Abertay Dundee, Dundee DD1 1HG, United Kingdom

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(Received 9 April 2010; accepted 14 May 2010; published online 10 June 2010)

We demonstrate the spectral upconversion of a unipolar subpicosecond terahertz (THz) pulse, where the THz pulse is the Coulomb field of a single relativistic electron bunch. The upconversion to the optical allows remotely located detection of long wavelength and nonpropagating components of the THz spectrum, as required for ultrafast electron bunch diagnostics. The upconversion of quasimonochromatic THz radiation has also been demonstrated, allowing the observation of distinct sum- and difference-frequency mixing components in the spectrum. Polarization dependence of first and second order sidebands at ωopt±ωTHz, and ωopt±2ωTHz, respectively, confirms the χ(2) frequency mixing mechanism.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

high-speed optical techniques, infrared spectra, light polarisation, microwave photonics, optical wavelength conversion, terahertz waves

PACS

  • 42.65.Ky

    Frequency conversion; harmonic generation, including higher-order harmonic generation

  • 42.65.Re

    Ultrafast processes; optical pulse generation and pulse compression

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3449132

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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