AvaRaman systems for Raman spectroscopy

Raman spectroscopy is often used for product identification, reaction monitoring, remote sensing and characterization of highly scattering particles.
Here, the inelastic scattering of the photons of the excitation light on molecules or solids causes a so-called Raman shift, a slight shift of the wavelength of the scattered light with reference to the wavelength of the monochromatic excitation light. In this so-called Raman effect, energy is either transferred from the excitation light to the analyzed material (Stokes side) or vice versa (anti-Stokes side). As excitation source usually a laser is used.
The spectral lines that are characteristic for the material (Stokes lines) are accordingly located on the left or right of the excitation line. Wavenumber is often used instead of wavelength as the energy-equivalent scale in the spectrum.

Avantes offers full Raman systems, where different Raman probes can be adjusted to the specific application. Here, the highly sensitive spectrometer and the laser at 532 nm or 785 nm are integrated in one housing. The configuration of the spectrometer is precisely matched to the laser wavelength. Since both high sensitivity of the spectrometer and high optical resolution are essential in Raman spectroscopy, only spectrometers from Avantes’ SensLine with cooled detectors are used in the Raman systems. For data evaluation, both the already included AvaSoft-Raman and the significantly more complex optional Panorama-Pro software are available.

On the other hand, Avantes offers the AvaRaman bundles, which provide optimal performance at a relative low price, already including all components including laser at 785 nm, spectrometer, probe and software.

Technical data AvaRaman systems


 AvaRaman-532 TECAvaRaman-532 HERO-EVO AvaRaman-785 TEC
Signal to noise ratio200:1 for Benzene800:1 for Benzene300:1 for Benzene
Resolution10 cm-110 cm-17 cm-1
SpectrometerAvaSpec-ULS2048L-TEC with grating NC (535-752nm), slit-25, DCL-UV/VIS, TE CooledAvaSpec-HERO with HSC1200-0.75 (535-660nm),slit-25-FCPC, TE-Cooled, Standard: replaceable slitAvaSpec-ULS2048L-TEC with grating SI (785-1080nm), slit-25, DCL-UV/VIS, TE cooled
Raman shift100-5400 cm-1100-3650 cm-1100-3500 cm-1
Laser output532 nm, 50mW532 nm, 50mW785 nm, 500 mW, Class 3b
Laser wavelength532 nm532 nm785 nm
Laser bandwidth< 0.1 nm< 0.1 nm< 0.2 nm
Dimensions housing240 mm (L) x 140 mm (W) x 250 mm (H)240 mm (L) x 140 mm (W) x 250 mm (H)240 mm (L) x 140 mm (W) x 250 mm (H)

 

AvaRaman probes

AvaRaman-PRB-XXX

3/8” SS low-cost focusing probe with a 200 µm excitation fiber and 400 µm read fiber. Multiple focal lengths available: 5 mm, 7,5 mm (Standard), 10 mm.
It can withstand 80°C. Manual shutter included, 1.5 m fibers.
Specification XXX = excitation wavelength, laser and spectrometer connection type

AvaRaman-PRB-FP-XXX

1/2” SS focusing probe with a 200 µm excitation fiber and 400 µm read fiber. Multiple focal lengths available: 5 mm (Standard), 7,5 mm, 10 mm.
It can withstand 80°C.
Specification XXX = excitation wavelength, laser and spectrometer connection type

AvaRaman-PRB-FIP-XXX

5/8” SS immersible focusing probe for in-situ measurements with a 200 µm excitation fiber and 400 µm read fiber. It can withstand 200°C.
Specification XXX = excitation wavelength, laser and spectrometer connection type

AvaRaman-PRB-FC-XXX

3/8” SS immersible process probe for in-situ measurements with a 200 µm excitation fiber and 400 µm read fiber. It can withstand 500°C and 3000psi, the probe optics provide complete background filtering.
Specification XXX = excitation wavelength, laser and spectrometer connection type

 

Technical data AvaRaman bundle


 AvaRaman-D (Highsense Bundle)AvaRaman-E (Performance Bundle)AvaRaman-F (Basic Bundle)
Range100 cm-1 – 3000 cm-1150cm-1 – 3600 cm-1150 cm-1 – 3600 cm-1
Resolution10 cm-16 cm-16 cm-1
SpectrometerBased on an AvaSpec-HS1024x58TEC-EVO set for (788-1020nm), slit-25, FC-PC connector, replaceable.Based on an AvaSpec-ULS2048x64TEC-EVO-RS set for (788-1100nm), DCL-UV/VIS200, FC-PC connector, replaceable.Based on an AvaSpec-ULS2048CL-EVO-RS set for (788-1100nm), slit-25, DCL-UV/VIS200, FC-PC connector)
IncludesAvaLaser785 (incl. probe), AvaRaman software: Panorama LightAvaLaser785 (incl. probe), AvaRaman software: Panorama LightAvaLaser785 (incl. probe), AvaRaman software: Panorama Light