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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 12 — Jun. 12, 2006
  • pp: 5376–5384

High efficiency generation and detection of terahertz pulses using laser pulses at telecommunication wavelengths

Arno Schneider, Marcel Stillhart, and Peter Günter  »View Author Affiliations

Optics Express, Vol. 14, Issue 12, pp. 5376-5384 (2006)

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We report on the generation and detection of few-cycle THz pulses in the organic crystal DAST (4-N,N-dimethylamino-4’-N’-methyl stilbazolium tosylate) using the telecommunication wavelength 1.5 µm. A continuous spectrum from 1.3 to 4.8 THz was generated with a very high conversion efficiency (ETHz,max ~50 kV/cm at an optical pump pulse energy of 25 µJ in a 0.6 mm thick crystal) using the high nonlinear optical susceptibility of DAST (χ(2) 111=490 pm/V at λ=1535 nm) and velocity-matching observed in this material. Using a frequency-doubled probe beam at λ=750 nm, nearly velocity-matched detection can also be realized in ZnTe crystals, resulting in a continuous spectrum from 1.3 to 4 THz.

© 2006 Optical Society of America

OCIS Codes
(160.2100) Materials : Electro-optical materials
(160.4890) Materials : Organic materials
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

ToC Category:

Original Manuscript: April 7, 2006
Revised Manuscript: May 18, 2006
Manuscript Accepted: May 22, 2006
Published: June 12, 2006

Arno Schneider, Marcel Stillhart, and Peter Günter, "High efficiency generation and detection of terahertz pulses using laser pulses at telecommunication wavelengths," Opt. Express 14, 5376-5384 (2006)

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