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Terahertz-induced lensing and its use for the detection of terahertz pulses in a birefringent crystal

Appl. Phys. Lett. 84, 2229 (2004); doi:10.1063/1.1688986

Issue Date: 29 March 2004

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Arno Schneider, Ivan Biaggio, and Peter Günter
Nonlinear Optics Laboratory, Institute of Quantum Electronics, Swiss Federal Institute of Technology, CH-8093 Zürich, Switzerland
We demonstrate terahertz-induced lensing (TIL), the focusing and defocusing of an ultrashort "probe" laser pulse induced by a collinearly traveling terahertz pulse in an electro-optic crystal. The intensity change on the axis of the probe beam after the crystal is shown to be linear with the terahertz (THz) electric field and can thus be used to measure the THz wave form. We show that the sensitivity of TIL is comparable to conventional electro-optic sampling, with the advantage of being applicable to all classes of electro-optic crystals, including strongly birefringent ones. The better sensitivity of TIL is demonstrated using the highly birefringent organic salt DAST (4-N,N-dimethylamino-4[prime]-N[prime]-methyl stilbazolium tosylate). ©2004 American Institute of Physics.
History: Received 9 October 2003; accepted 26 January 2004
Permalink: http://link.aip.org/link/?APPLAB/84/2229/1
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KEYWORDS and PACS

Keywords
PACS
  • 78.20.Fm
    Birefringence (bulk materials/thin films)
  • 78.20.Jq
    Electrooptical effects (bulk materials/thin films)
  • 61.80.Ba
    Ultraviolet, visible, and infrared radiation effects including laser radiation
  • YEAR: 2004

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PUBLICATION DATA

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