Confocal raman spectrometer and treatment method for laser path of confocal raman spectrometer

Abstract

The invention relates to a confocal raman spectrometer and a treatment method for a laser path of the confocal raman spectrometer. The treatment method comprises the steps that: one laser is selected to emit laser light which enters a laser transmission device, the laser light is transmitted to a continuously adjustable laser attenuator by using a group of reflectors in a laser switching device in the laser transmission device, corresponding to the laser, the intensity of the laser light is attenuated, the laser light treated by the continuously adjustable laser attenuator is reflected to an edge light filter switching device, the laser light is reflected by the edge light filter switching device and irradiates a substance to be detected on a substance stage of a microscope device through an objective lens of the microscope device, raman signals, rayleigh scattering light and laser light generated by the substance to be detected after being excited by the laser light are collected by the objective lens of the microscope device and return to the edge light filter switching device; an edge light filter filters out the rayleigh scattering light and the laser light and leaves the raman signals, and finally, the raman signals form a raman spectrum through a signal confocal device and a spectrum detection device.

Description

technical field [0001] The present invention relates to a Raman spectroscopy technology, more specifically, to a confocal Raman spectrometer with better monitoring effect and a processing method for the laser light path in the confocal Raman spectrometer. Background technique [0002] Light interacts with matter in many ways, and scattering is one of them. In light scattering, the frequency of scattered light is different from that of incident light, which is called inelastic scattering, also known as Raman scattering. Raman spectroscopy is a spectroscopic technique based on Raman scattering. In Raman spectroscopy, the difference in frequency between scattered light and incident light is called Raman shift. Studying Raman shift can obtain the vibration and rotation information of chemical bonds in molecules, as well as the vibration information of crystal lattices in crystals, so Raman Spectroscopy is an important spectroscopic technique for studying the microstructure of ...

AI Technical Summary

Problems solved by technology

At present, the equipment that uses Raman scattering technology to study microscopic substances mainly includes confocal Raman spectrometers with relatively high sensitivity combined with confocal microscopy devices. However, the current confocal Raman spectrometers have limited types of substances to be measured and large volumes. And the band range of the detected spectrum is too narrow, etc.

Images