| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a terahertz spectroscopic device capable of shortening a measuring time without lowering reliability of measurement. <P>SOLUTION: In this terahertz spectroscopic device equipped with a beam splitter for splitting a light pulse from a laser light source into pump light and probe light P3, and an optical path length changing optical system for changing the optical path length of the pump light or the probe light P3 split by the beam splitter, the optical path length changing optical system is constituted of a plurality of pairs of mirrors 9a, 10a, 9b, 10b, and one pair of mirrors 9a, 10a among the plurality of pairs of mirrors is set to be movable. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
