Online Raman spectrometer correction device and correction method thereof

A Raman spectrometer and correction device technology, applied in the field of spectroscopy, can solve the problems of measurement and detection uncertainty, Raman spectral imaging horizontal shift, grating vibration, etc., achieve long-term effective sample detection, overcome laser power drop, realize The effect of real-time correction

Inactive Publication Date: 2011-07-13
NANJING UNIV OF TECH
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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 ...

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  • Online Raman spectrometer correction device and correction method thereof
  • Online Raman spectrometer correction device and correction method thereof
  • Online Raman spectrometer correction device and correction method thereof

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Embodiment Construction

[0014] The correction device of the present invention includes a laser light intensity correction part 2 and a spectrogram level correction part. The two parts operate independently and can realize the perfect correction of the online Raman spectrometer when combined.

[0015] Such as figure 1 , the laser light intensity correction part is: the laser 1 provides the excitation light source for Raman detection for the online Raman spectrometer 4, and the laser power correction part includes a spectroscopic fiber 21, a laser attenuation module 22, a 45° equidistant grating 23 and a photodetector 24, The output laser light of the laser 1 is split into one path through the splitting optical fiber 21 , and then input into the photodetector 24 through the laser attenuation module 22 and the 45° equidistant grating 23 in sequence. Here the laser attenuation module 22 is two 90% attenuation sheets. The excitation light source is input into the detection sample 5 through an optical fib...

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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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Application Information

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IPC IPC(8): G01N21/65
Inventor 程明霄林锦国张赛军张进明赵天琦蒋书波於拯威
Owner NANJING UNIV OF TECH
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