General Raman Spectroscopy
Raman spectroscopy is a non-destructive technique spanning a wide range of scientific and industrial applications. It is often used to characterize or identify the chemical composition and structure of an unknown material. Incident laser light, in the UV, visible or NIR, is scattered inelastically from molecular vibrational modes of the sample.
The frequency difference (measured in relative cm-1) between the incident and scattered photons is called the Raman shift. The majority of inelastically scattered photons are found at positive Raman shifts, corresponding to lower energies and longer wavelengths – this is referred to as Stokes scattering. The scattered photons are analyzed by a spectrometer to produce a Raman spectrum.
With Stokes scattering, the energy of the molecule increases and the Raman scattered photons are red-shifted. With Anti-Stokes, the energy of the molecule decreases – so therefore the molecules must have already been in a vibrationally excited state – and the Raman scattered photons are blue-shifted.
Recommended Products for General Raman Spectroscopy
Spectrometers
IsoPlane
Multi-Award Winning Imaging Spectrometer
- Patented astigmatism free Schmidt-Czerny-Turner design
- High spectral resolution
- Superior signal-to-noise ratio
SpectraPro HRS
High Performance Imaging Spectrographs
- 60% improvement in spectral resolution and SNR
- Astigmatism-corrected optical system
- Interchangeable grating turrets
PIXIS
High-Performance, Low-Noise CCD Cameras
- Broad range 120–1100 nm
- Lifetime vacuum guarantee
- Low dark current
ProEM
Ultralow Light Detection Camera
- Deep cooling
- ≥95% quantum efficiency
- eXcelon 3 technology
BLAZE
Award Winning Cameras for Spectroscopy
- Up to 300% higher NIR sensitivity
- True -100°C cooling
- Permanent vacuum guarantee
Resources from the Learning Center
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Low-Frequency Raman Spectra of Amino Acids Discovery of a Second Fingerprint Region
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