A real-time Raman spectrum stabilization method based on external reference method and photobleaching

Abstract

The invention discloses a real-time Raman spectrum stabilization method based on the external reference method and photobleaching; the first step is system construction; the second step is photobleaching of the product to be tested before measurement; the third step is static measurement and Dynamic measurement; the real-time Raman spectrum stabilization method based on the external reference method and photobleaching of the present invention, through the optical fiber multiplexing method, using wavelength division multiplexing technology, transmits two Raman spectral signals in the optical fiber at the same time; through two One path of optical fiber, one path is used as the measurement signal, and the other path is used as the external reference signal, and the real-time Raman spectrum is stabilized by the external reference method; at the same time, before the measurement, the sample is irradiated with a laser irradiation device for a certain period of time to weaken the fluorescence of the sample; The spectrum is stable; the sample or laser is moved during the measurement process in the final detection to improve the heat conduction of the sample; the spectrum is stable during the detection process.

Description

technical field [0001] The invention relates to a Raman spectrum stabilization method, in particular to a real-time Raman spectrum stabilization method based on an external reference method and photobleaching, and belongs to the technical field of Raman spectrum measurement. Background technique [0002] Raman spectroscopy is a kind of scattering spectrum; Raman spectroscopy analysis method is based on the Raman scattering effect discovered by Indian scientist C.V. An analysis method applied to the study of molecular structure, Raman spectroscopy is widely used as a means of analyzing and testing the molecular structure of substances. After the first laser came out in 1960, the introduction of laser light source, the improvement of weak signal detection technology and the The application of computers has made great progress in Raman spectroscopy in many application fields; one problem encountered in the detection of substances by Raman spectroscopy is that it is easily distu...

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Problems solved by technology

[0002] Raman spectroscopy is a kind of scattering spectrum; Raman spectroscopy analysis method is based on the Raman scattering effect discovered by Indian scientist C.V. An analysis method applied to the study of molecular structure, Raman spectroscopy is widely used as a means of analyzing and testing the molecular structure of substances. After the first laser came out in 1960, the introduction of laser light source, the improvement of weak signal detection technology and the The application of computers has made great progress in Raman spectroscopy in many application fields; one problem encountered in the detection of substances by Raman spectroscopy is that it is easily disturbed during the measurement process, and it is prone to distortion after being disturbed. The Raman spectrum signal is weakened, and the measured Raman spectrum cannot identify the substance