Laser Raman Spectroscopy

What is Raman Spectroscopy?

  • Raman spectroscopy depends on a change in the induced dipole moment or polarization to produce Raman scattering.
  • When a beam of photons strikes a molecule the photons are scattered elastically (Rayleigh scattering) and inelastically (Raman scattering), generating Stoke's and anti-Stokes lines.

Advantages of Raman Spectroscopy

  • Because Raman spectroscopy is a scattering process, samples of any size or shape can be examined.
  • Very small amounts of material can be studied down to microscopic levels - 10 microns.
  • Fiber optics can be used for remote sensing.
  • Aqueous samples can be studied.
  • The region from 80-500 cm-1 can be studied with no changes on the same instrument.

Our System


    Renishaw Model 2000 Raman Spectrometer
  • Two laser wavelengths available: 633nm and 514nm
  • Microscope with Macro Point Accessory Kit, allowing analysis of powders, liquids, films, etc.
  • Global Raman Imaging: allows one to quickly image different moieties on a catalyst surface (changes in oxidation state, crystal form, etc.)
  • Raman Mapping Stage: allows one to map discrete areas on a flat surface, collecting whole spectra from each area and deriving 3D maps from the data.
  • Line Focus Accessory: allows one to defocus the Laser beam to cover a discrete line on the surface of the sample and collect maps.
  • Fibre Optic Attachment: with approximately 20 meters of cable, allows us the flexibility to attach the Raman spectrometer to other instruments such as the Imaging XPS.

Examples of Laser Raman Spectroscopy



Contact

.:Ross Davidson
Manager, Scientific Operations
Call: (519) 661-2173
Fax: (519) 661-3709
E-Mail us

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