Raman spectrum enhancement device, raman spectrum enhancement system and raman spectrum enhancement method based on external resonant cavity technology

Abstract

The invention discloses a raman spectrum enhancement device, a raman spectrum enhancement system and a raman spectrum enhancement method based on external resonant cavity technology. The device comprises a laser device, a laser transmission optical fiber, an excitation crystal, a transparent and reflecting mirror, a frequency doubling crystal and a resonant cavity, wherein the laser device provides a laser light source for raman detection, the laser device is connected with the excitation crystal through the laser transmission optical fiber, and the excitation crystal generates laser with specific wavelength; the transparent and reflecting mirror is plated, and only allows specific frequency to pass through, and totally reflects light of other wavelength; the frequency doubling crystal is used for changing the frequency of laser; the resonant cavity is used for ensuring that the laser with changed frequency can realize total reflection. The influence of weak raman effect on incomplete and inaccurate spectrogram when online raman spectrogram is used for detecting low component substances can be overcome, and the effective analysis detection of a raman spectrometer on the online complicated multi-component substances can be guaranteed.

Description

technical field [0001] The invention belongs to the field of photoelectric technology, and relates to a Raman spectrum enhancement device, in particular to a Raman spectrum enhancement device based on extracavity resonator technology; at the same time, the invention also relates to a Raman spectrum enhancement device based on extracavity resonator technology Spectrum enhancement system and enhancement method. The invention is used to enhance the Raman spectrum effect when the Raman spectrometer is used for real-time online monitoring of gas, liquid or gas-liquid mixed substance components, so as to realize accurate qualitative and quantitative analysis of the online Raman spectrum when detecting lower component substances . Background technique [0002] Raman scattering refers to the frequency change of light caused by the interaction between incident light and molecular motion when light passes through a medium. It was discovered by Indian physicist Chandrasekara Raman in ...

AI Technical Summary

Problems solved by technology

When the on-site monitoring is low in concentration and trace amount of material, the Raman effect is not strong, and the Raman signal is relatively weak, which leads to a decrease in the accuracy of online Raman monitoring. Substances most in need of detection

Images