A Raman spectroscopy detection system and detection method

Abstract

The invention provides a Raman spectrum detection system and method. The system comprises a Raman spectrum detection head, wherein the Raman spectrum detection head comprises a light shield; the light shield comprises a slit, a detection mirror, a laser line source, an optical fiber, a splitting optical fiber and a scanning mirror; through the slit, Raman scattered light can be emergent to a sample, and signal light can be incident; the detection mirror is used for outwards emitting the signal light; the laser line source is used for emitting linear laser, the optical fiber is used for filtering Rayleigh scattered light, the splitting optical fiber is used for reflecting the Raman scattered light to the scanning mirror and outwards emitting the signal light, and the scanning mirror is used for acquiring the uniform linear Raman scattered light. The Raman spectrum detection system also comprises a cut-off optical fiber for cut-off optical filtering, a lens for collecting the signal light, a long-pass optical fiber for performing long-pass optical filtering, a Raman spectrometer for acquiring optical signals, a CCD (charge-coupled device) for acquiring the Raman scattering information of the sample and a processor for analyzing the sample. According to the system and the method, the Raman line spectrum information and image information of the sample can be acquired.

Description

technical field [0001] The invention relates to the field of optical detection, in particular to a Raman spectrum detection system and detection method. Background technique [0002] Raman scattering is the scattering of frequency changes caused by the interaction between incident light and molecular motion when light passes through a medium. Raman spectroscopy is often used to characterize the structural characteristics of molecules, also known as the "fingerprint" of molecules. The analysis methods of Raman spectroscopy mainly include techniques such as Fourier transform, high temperature, resonance, surface enhancement, confocal microscopy, and solid-state photoacoustics. Raman spectroscopy has a wide range of applications in many fields, especially it can provide fast, simple, non-destructive, repeatable qualitative and quantitative analysis techniques, without cumbersome pretreatment steps, avoiding damage to samples, and achieving screening speed Speed ​​up. Of cours...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a Raman spectrum detection system and detection method to solve the technical problem in the prior art that Raman technology can only perform point spectrum detection

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