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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 6478–6483

Compact, high average power, fiber-pumped terahertz source for active real-time imaging of concealed objects

Daniel Creeden, John C. McCarthy, Peter A. Ketteridge, Peter G. Schunemann, Timothy Southward, James J. Komiak, and Evan P. Chicklis  »View Author Affiliations


Optics Express, Vol. 15, Issue 10, pp. 6478-6483 (2007)
http://dx.doi.org/10.1364/OE.15.006478


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Abstract

We have modeled and demonstrated a scalable, compact, fiber-pumped terahertz source based on difference frequency mixing (DFM) in zinc germanium phosphide (ZGP) capable of producing high average and peak-power pulses. Currently, our terahertz source produces 2mW of average THz power and >40W of peak power with sub-nanosecond pulses at a repetition rate of 100kHz in the range of 2-3THz without cryogenic cooling or ultra-fast optics. This high average power laser-based terahertz output enables the real-time imaging of concealed objects using an off-the-shelf uncooled microbolometer focal-plane array. With this THz system, we have imaged objects obscured inside in a common shipping envelope, demonstrating the potential of compact laser-based terahertz sources for use in security screening applications.

© 2007 Optical Society of America

OCIS Codes
(040.1880) Detectors : Detection
(190.2620) Nonlinear optics : Harmonic generation and mixing

ToC Category:
Detectors

History
Original Manuscript: February 22, 2007
Revised Manuscript: April 23, 2007
Manuscript Accepted: April 27, 2007
Published: May 11, 2007

Citation
Daniel Creeden, John C. McCarthy, Peter A. Ketteridge, Peter G. Schunemann, Timothy Southward, James J. Komiak, and Evan P. Chicklis, "Compact, high average power, fiber-pumped terahertz source for active real-time imaging of concealed objects," Opt. Express 15, 6478-6483 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-10-6478


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References

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