公开(公告)号：US11635327B2

公开(公告)日：2023-04-25

申请号：US16499601

申请日：2018-03-29

Applicant: Agency for Science, Technology and Research

Inventor： Malini Olivo ,  Gurpreet Singh ,  Renzhe Bi ,  Kapil Dev ,  Dinish Unnimadhava Kurup Soudamini Amma ,  Chris Jun Hui Ho

IPC: G01J3/02 ,  G01J3/44 ,  G01N21/65

Abstract: Provided is an optical probe, and a Raman spectroscopy system using such, including excitation and detection optics coupled to a sampling optics via a beam splitter, in confocal arrangement with a sample focal plane of the sampling optics. The detection optics is arranged to receive Raman signal from the sample focal plane and direct it onto a tip of a detection optical fiber. The optical probe may further include a positioning device mechanically coupled to the sampling optics and configured to control a position of the sample focal plane. In the Raman spectroscopy system a light source is coupled to the excitation optics via an excitation optical fiber, and a spectrometer is coupled to a detection optics via a detection optical fiber. Provided is further a method for measuring Raman signal depth profile in a sample, wherein sample's Raman spectra is measured and stored at different focal plane positions.