公开(公告)号：US20210298604A1

公开(公告)日：2021-09-30

申请号：US17199839

申请日：2021-03-12

Applicant: TimeGate Instruments Oy

Inventor： Lauri Kurki ,  Mari Tenhunen

IPC: A61B5/00 ,  G01N33/02 ,  G01N21/65 ,  G01N21/64 ,  G02B6/42

Abstract: An apparatus for measuring a spectrum (RM(λ)) of Raman-scattered light (LB2). The apparatus includes a light source (LS1) configured to provide illuminating light pulses (LB1), and an optical probe to guide the illuminating light pulses to a sample region (REG1) and cause excitation of Raman-scattered light in the sample region. The optical probe includes a waveguiding core surrounded by a cladding. The waveguiding core has a first facet (SRF1) and a second facet (SRF2) such that the first facet is arranged to gather the Raman-scattered light from the sample region. The apparatus further includes a spectrometer, and a focusing unit (SF2) that is configured to guide the gathered Raman-scattered light from the second facet to the spectrometer. The spectrometer includes a detector array (ARR1) that is arranged to measure a spectrum (RM(λ)) of the Raman-scattered light by using time gated detection.