UV Raman Spectrometer

Raman Spectrometer LabRAM HR Evolution UV

for UV Raman spectroscopists

UV Raman (with laser wavelengths below 400nm) can be used to probe specific sample properties, and benefit from experiment properties different from typical visible Raman measurements – for example, greatly increased Raman scattering efficiency, modified laser penetration within the sample, and resonance coupling to different chemical moeities. However, UV analyses come with a number of technical challenges, that require considered instrument design to allow UV Raman to be a truly useful tool for the researcher.

Segment: Scientific
Manufacturing Company: HORIBA France SAS

The optimized UV configuration of the LabRAM HR Evolution offers many distinct advantages for UV Raman spectroscopists.  It is the only system available which has been built from the ground up to work in the broad UV-visible range, working from 200nm through to 2100nm. It utilises a fully achromatic, lens-free design.

  • Dual path optics allow fast and easy switching between optimized “visible” (400nm-800nm) and achromatic broad range (UV, visible, IR) optical paths.
  • Full achromatic lens-free design
    Lens based designs for UV Raman suffer from a number of disadvantages.  However carefully designed, lenses can only offer consistent performance in a limited spectral range. Spectrometers which utilise lenses for broad range coverage will exhibit loss of signal intensity and spectral resolution due to optical defocus/aberration within the spectrometer.
  • High spectral resolution
    The unique 800mm long focal spectrometer of the LabRAM HR Evolution offers spectral dispersion in the order of 1-2cm-1/pixel in the 200-400nm region, allowing high quality Raman spectra without loss of detail.

Resolution UV Raman

Typical spectral resolution achievable in the deep UV region with the LabRAM HR Evolution.

  • All reflective x74 mirrored objective

Over broad ranges chromatic shifts induce a focal point gap between the white light optical image and laser spot. With the optional all-mirrored x74 objective, it is  possible to remove any chromatic shift and abberation, allowing easier sample visualization and alignment, and true diffraction limited spatial resolution.

Focus UV Raman

Depth Profiles with UV Raman

 

Depth profiles acquired with standard lens objective and HORIBA all reflective objective, illustrating the latter’s superior performance.

 

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