ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,990, issued on Dec. 9, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).

"Spectroscopic measurement device" was invented by Takayoshi Kuga (Hamamatsu, Japan), Yoichi Kawada (Hamamatsu, Japan), Takashi Yasuda (Hamamatsu, Japan), Kazutaka Tomari (Hamamatsu, Japan) and Masatoshi Fujimoto (Hamamatsu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A spectroscopic measurement device includes: a light source unit configured to output pump light and probe light; a terahertz wave generation unit configured to generate a terahertz wave by the input of the pump light; a terahertz wave detection unit to which the terahertz wave and the probe lig...