Raman spectra

Raman spectroscopy is based on the Raman scattering effect discovered by Indian scientist C. V. Raman. It is a kind of scattering spectrum. Simply speaking, when light passes through a medium, the change of light frequency caused by the interaction between incident light and molecular vibration and rotation can be applied to the analysis of molecular structure.

Raman spectroscopy originally used concentrated sunlight, but later used Gonggu lamp. In the following decades, due to the weak intensity of Raman scattering light, low energy of laser light source, and the size of the sample to be measured must be large enough, colorless, dust-free, no fluorescence and other issues, for a long time can not really become a reality. Tools for application value.

Then, with the appearance of ruby laser, the study of Raman scattering has entered a new era. Because of its good monochromaticity, strong directivity and high power density, the laser can be used as an excitation source, which can greatly provide the excitation efficiency of the source and become an ideal source of Raman spectroscopy.

Nowadays, with the improvement of detection technology and the decrease of requirement for the tested sample, Raman spectroscopy, surface-enhanced Raman spectroscopy, laser resonance Raman spectroscopy, confocal microscopic Raman spectroscopy, high-temperature Raman spectroscopy, Raman spectroscopy combined with optical fiber technology, solid-state photoacoustic Raman technology, Raman spectroscopy and Raman spectroscopy are used. Raman spectroscopy has been widely used in many fields, such as physics, chemistry, medicine, industry and so on.