公开(公告)号：US20220404274A1

公开(公告)日：2022-12-22

申请号：US17839542

申请日：2022-06-14

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takayoshi KUGA ,  Yoichi KAWADA ,  Takashi YASUDA ,  Kazutaka TOMARI ,  Masatoshi FUJIMOTO

IPC: G01N21/3581

Abstract: 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 light are input and configured to modulate the probe light based on a refractive index that changes due to an electro-optical effect according to the input of the terahertz wave; and a light detection unit configured to detect the probe light modulated by the terahertz wave detection unit. A main body unit is configured to include the light source unit and the light detection unit. A measurement unit is configured to include the terahertz wave generation unit and the terahertz wave detection unit. The main body unit and the measurement unit are optically connected to each other by a polarization maintaining fiber.

公开(公告)号：US20230083427A1

公开(公告)日：2023-03-16

申请号：US17798377

申请日：2021-01-21

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Mitsuhito MASE ,  Masatoshi FUJIMOTO ,  Tomofumi SUZUKI

IPC: G01B9/02091 ,  G01N21/17

Abstract: An optical coherence tomography device includes a light source, a mirror device including a movable mirror configured to perform a reciprocating operation, a support part configured to support an object, a beam splitter configured to generate interfering light, an optical sensor configured to detect the interfering light, and a control unit. Each of the plurality of pixels included in the optical sensor includes a light receiving part, a plurality of transfer gates, and a discharge gate. The control unit applies an electric signal to the optical sensor so that the plurality of transfer gates are sequentially brought into a charge transfer state in at least three time ranges separated from each other and the discharge gate is brought into a charge discharge state in a time range other than the at least three time ranges for each period of an interferogram signal of the interfering light.