Online Raman spectrometer correction device and correction method thereof

Abstract

The invention discloses an online Raman spectrometer correction device and an online Raman spectrometer correction method thereof. The laser power and spectrogram position of an online Raman spectrometer are corrected in real time by taking the laser power of a laser of an online Raman detection system as reference power and taking the position of a Raman spectrum peak obtained by a neon lamp monochromatic light source as a reference position to realize the correction of reduced or biased laser power and a horizontally offset spectrogram under the long working condition of an online Raman spectrum, thereby realizing the effective long working of the online Raman spectrometer in a severe environment and ensuring the effective long sample field detection of the online Raman spectrometer.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and is used for laser power correction and spectrogram level correction of an online Raman spectrometer, and realizes the correction when the laser power drops or deviates and the correction when the spectrogram level deviates when the online Raman spectrum works for a long time , so as to achieve the long-term effective work of the online Raman spectrometer under the harsh environment, and provide an online Raman spectrometer calibration device and a calibration method thereof. Background technique [0002] Raman spectroscopic analysis technology is a non-contact spectroscopic analysis technology based on Raman scattering effect, which can perform qualitative and quantitative analysis on the composition and structure of substances. The measurement speed of Raman spectroscopy is fast, and the application of Raman spectroscopy analysis can achieve in-situ real-time measurement, which is co...

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Problems solved by technology

However, in actual use, when the laser is used in a relatively harsh environment for a long time, there will be phenomena such as laser power drop and deviation, and the strength of the Raman spectrum signal is proportional to the laser power. When the laser power drops When , the Raman signal also decreases, which affects the accuracy of the Raman spectrum and brings uncertainty to the measurement and detection.

At the same time, in the long-term field use, it is inevitable that the vibration of the grating and the position shift of the grating caused by thermal expansion and contraction will inevitably lead to the horizontal shift of Raman spectral imaging.

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