| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device and a method for measuring terahertz wave, which achieve improvement in S/N ratio of measurement. <P>SOLUTION: In measurement of terahertz wave, of current signals detected by a detection unit 102 using a photoconductive element, offset current I independent of change in an electric field of the terahertz wave is drawn at an input portion of a current detection unit 104 which detects a current signal as a voltage signal. An amount of the offset current to be drawn is adjusted based on a result of monitoring the offset current based on the voltage signal. While the offset current I is being drawn, a time waveform of the terahertz wave is acquired based on the voltage signal. Monitoring and adjustment of the offset current is performed during standby time in which the time waveform of the terahertz wave is not measured. <P>COPYRIGHT: (C)2012,JPO&INPIT |
