Patent ID: 8536530
Filing Date: 2013-09-17
Classification: G01J,G01N

Abstract:
1. A terahertz wave transceiver configured to generate and detect terahertz waves based on time-domain spectroscopy, comprising: a photoconductive device including a photoconductive film, a first electrode, and a second electrode configured such that the first and second electrodes are disposed on the photoconductive film and such that the first and second electrodes oppose each other via an excitation light illumination region; a bias applying unit connected to the first electrode and configured to apply a bias between the first electrode and the second electrode to generate a terahertz wave in the excitation light illumination region; a current detection unit connected to the second electrode and configured to detect a terahertz-wave current that is a component of a current generated in the excitation light illumination region and that is generated by an electric field of a received terahertz wave; and a current drawing unit connected to the second electrode and configured to draw a current originating from the bias applied by the bias applying unit, wherein the current drawing unit includes an adjustment unit configured to determine the amount of the current drawn, based on the amount of the bias applied by the bias applying unit.