COMPOSITE MULTISPECTRAL RAMAN SPECTROSCOPY METHOD AND DEVICE

摘要

The invention relates to a Raman spectroscopy device (1) comprising a source system (2) generating a first excitation light beam at a first excitation frequency, a spectral separation system (8), a system for detection (10) in an observation spectral range, and a computer (12) generating a first part of the Raman scattering spectrum in a first Raman spectral range extending between a first relative wave number and a second relative wave number. According to the invention, the source system is adapted to generate a second excitation light beam at a second excitation frequency different from the first excitation frequency, the computer generating a second part of the Raman scattering spectrum in a second Raman spectral range, expressed as wave number as a function of the same observation spectral range, said second spectral range extending between a third relative wave number and a fourth relative wave number. The invention also relates to a Raman spectroscopy method.