SORS
Definition
Spatially offset Raman spectroscopy. The collection optics are offset from the laser spot so the detector reads photons that have travelled through the container wall and back, allowing identification of contents through opaque plastic, paper or thin walls.
Related terms
- Mutual Exclusion Rule
- For a centrosymmetric molecule (one with a centre of inversion), a vibration is either IR active or Raman active, never both. This...
- Polarisability
- The ease with which the electron cloud of a molecule deforms in an external electric field. A vibration is Raman active only...
- Raman Effect
- Inelastic scattering of monochromatic light by a molecule. The scattered photon is shifted in wavelength by an amount equal to a vibrational...
- SERS
- Surface-enhanced Raman scattering. A nanorough gold or silver surface enhances the Raman signal of molecules adsorbed on it by factors of 10^6...
- Stokes and Anti-Stokes Lines
- Stokes lines (longer wavelength, lower energy than the laser) come from molecules starting in the ground vibrational state; anti-Stokes lines (shorter wavelength,...
Explained in
- Raman Spectroscopy and Comparison with IRSpatially offset Raman spectroscopy. The collection optics are offset from the laser spot so the detector reads photons that have travelled through the contain...