Patent ID: 7615787
Filing Date: 2009-11-10
Classification: G01J,G01N,H01L,H01Q

Abstract:
1. A photoconductive device for generating or detecting a tera-hertz wave, comprising a photoconductive film provided with first and second electrodes formed on a first surface, in which a gap is present between the first and second electrodes; and a substrate functioning as a lens to control a directivity of a tera-hertz wave generated from the first surface when a second surface opposite to the first surface of the photoconductive film is irradiated with light, the substrate being provided with third and fourth electrodes that are different from the electrodes of the photoconductive film, wherein the first and third electrodes of the substrate are held in contact or bonded with each other and the second and fourth electrodes of the photoconductive film are held in contact or bonded with each other.