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PHOTOCONDUCTIVE ELEMENT FOR GENERATION AND DETECTION OF TERAHERTZ WAVE

  • US 20080315098A1
  • Filed: 06/17/2008
  • Published: 12/25/2008
  • Est. Priority Date: 06/22/2007
  • Status: Active Grant
First Claim
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1. A photoconductive element for generating or detecting a terahertz wave, comprising:

  • a carrier generation layer for generating carriers on light irradiation;

    a pair of conductive electrodes provided in opposition on one face of the carrier generation layer, each containing a strip line;

    a pair of conductive antennas placed in opposition with a gap for light irradiation onto the carrier generation layer, each being joined to the electrodes;

    a pair of conductive adjusting stubs for adjusting a propagation state of the terahertz wave generated or detected by the carriers;

    wherein each of the adjusting stubs has a length of not longer than the wavelength λ

    of the terahertz wave generated by the carriers, and is placed at a distance of not more than the wavelength λ

    from a joint between the antenna and the electrode.

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