Raman Spectroscopy

Raman spectroscopy technique illustrated with an EAGLE SW spectrometerRaman spectroscopy is a molecular spectroscopic technique that relies on inelastic scattering of monochromatic light in molecular structures. The incident laser light changes the excitation states of the molecules, and during this process, the molecules will emit light at higher and/or lower wavelengths relative to the excitation wavelength (called Stokes or Anti-Stokes shifts). Each material has its own specific Raman spectrum. Raman scattering can, therefore, be used to identify and quantify the presence and composition of various substances.

 

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The highest efficiency Raman OEM spectrometers

Ibsen’s transmission grating based spectrometers are ideally suited for Raman spectroscopy due to the following benefits:
Miniature Raman Spectrometer

  • Nearly 100% polarization independent efficiency (optical throughput)
  • Integration with both cooled and non-cooled CCD detectors and cameras
  • Robustness for portability, usage, or other challenging industrial environments
  • Low temperature dependence
  • Error free imaging of linear fiber array in image plane
  • Compact size

Products for Raman Spectroscopy

Ibsen has a number of OEM spectrometer platforms available, that are well suited for integration into your Raman system. If you need a better resolution, another wavelength, or if none of the examples fit your specific needs for other reasons, we can always discuss a customized spectrometer to fit your requirements.

You can use our Raman Waveshift converter to convert between Raman shift in inverse centimeters and wavelength in nm.

See an example of Raman spectrum measured with one of our Raman spectrometers here.

 

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Below is a short list of examples of spectrometers

Excitation High ThroughputHigh ResolutionUltra Compact
785 nm

Range (cm-1)
Resolution (cm-1)
EAGLE Raman-S
200 - 3650
4
EAGLE SW-NIR
600 - 2500
4
FREEDOM HR VIS-NIR
"0" - 3650
10
830 nm

Range (cm-1)
Resolution (cm-1)
EAGLE Raman-S
"0" - 2960
4
EAGLE SW-NIR
"0" - 1800
4
FREEDOM HR VIS-NIR
"0" - 2950
8
532 nm

Range (cm-1)
Resolution (cm-1)
FREEDOM HR VIS
"0" - 9700
14