When the light hits the substance, the photon collides with the electron in the molecule, if the inelastic collision occurs, the photon has a part of the energy transferred to the electron, and the frequency of the scattered light is not equal to the frequency of the incident light, this scattering is called Raman scattering, and the resulting spectrum is called Raman spectrum.
From the perspective of analytical testing, infrared spectroscopy and Raman spectroscopy belong to the same molecular vibration spectroscopy, but there is actually a big difference between the two: infrared spectroscopy is an absorption spectrum, and Raman spectroscopy is a scattering spectrum.
Raman can choose visible light to near-infrared light, the spectrum is generally clearer, overlapping bands are rarely seen, and the spectrum analysis is more convenient, Raman spectroscopy is often used to study the symmetrical vibration of non-polar groups and skeletons. The Raman scattering of water is weak, which is more suitable for the determination of aqueous solutions than infrared spectroscopy, which can be measured in glass containers or capillaries without special sample preparation, and Raman spectroscopy is more comprehensive in improving the information of inorganic compounds.
Infrared spectroscopy analysis has three elements: absorption frequency, intensity, and peak shape, while Raman spectroscopy analysis has three elements, as well as depolarization, Raman spectroscopy and infrared spectroscopy complement each other most of the time, that is: infrared is strong, Raman is weak;Infrared is weak, Raman is strong.
The NLM series of realstable multi-mode narrow linewidth lasers is a featured product of Xinglin Ruiguang. This series of products can realize the narrow linewidth, stable power and stable wavelength output of lasers, and are widely used in Raman spectroscopy, fluorescence detection, material analysis and other industries. The laser contains host computer control software, which can monitor the use status of the laser and support laser firmware update. At the same time, we can provide the RL-RP series of Raman probes to meet your supporting application needs.
Disclaimer: Part of the content of this article comes from the Internet, for the purpose of technical research exchanges, only for your reference and Xi, if the description is wrong or academic incorrect, please put forward in time. If copyright issues are involved, please contact us and we will verify and delete them as soon as possible.