Patent ID: 9513212
Filing Date: 2016-12-06
CPC Classification: G01N

Claim Text:
1. A photoconductive antenna that generates a terahertz wave by irradiation with a light pulse, comprising: a carrier generation layer that has carriers formed therein by irradiation with the light pulse, and is constituted by a semi-insulating substrate; an insulating layer, located on the carrier generation layer, which is capable of transmitting the light pulse; and a first electrode and a second electrode, located above the carrier generation layer, which apply a voltage to the carrier generation layer, wherein the insulating layer is provided directly on the carrier generation layer in a region which is irradiated with the light pulse between the first electrode and the second electrode in a plan view, whereas the insulating layer is formed above the first and second electrode layer outside the region which is irradiated with the light pulse.