| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce measurement time by lowering a noise floor when measuring terahertz waves. <P>SOLUTION: A terahertz wave measuring device for acquiring a time waveform of a terahertz wave pulse T1 by time domain spectroscopy includes a detection section 109, a minute signal detection section 103, and an integral section 104. The minute signal detection section 103 has a time constantτand detects a signal component of a frequency fs from a signal from the detection section 109. The integral section 104 is connected to the output stage of the minute signal detection section 103, and the time constant is not more than the time constantτand is larger than 1/(2fs). <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
