Choosing a Raman spectrometer

Raman spectrometers can be customised with a range of excitation laser wavelengths. The laser(s) you choose will depend on your research materials. Our spectroscopy experts explain the different wavelengths, power and focus types available using practical examples, as well as discussing:

• How to reduce the effects of background fluorescence
• How the excitation wavelength affects the penetration depth into a sample
• The optimum power output to maximise signal levels while avoiding sample damage
• How focus type, optics, excitation wavelength and scanning affect laser spot size, sample coverage and spatial resolution

By the end of the webinar, you will understand how to select the optimum lasers for your samples.

Watch now

Using real examples, we discuss how the functional parts of an inVia microscope affect its performance, as well as:

• The optical layout of a dispersive Raman spectrometer
• How spectrometer design affects throughput and sensitivity
• How detector options affect optical efficiency
• Achieving both high spectral resolution and a broad spectral range
• Controlling the confocality of a Raman microscope

By the end of the webinar, you will understand the key factors that affect spectrometer performance, to help you choose the best system for your analyses.

Watch now

Finally, we demonstrate the operation of an inVia microscope using a variety of real samples, and illustrate:

• Instrument layout and optics, from the excitation laser to the detector
• How the numerical aperture (N.A.) of microscope objectives affect sensitivity, spatial resolution and confocality
• Illumination options (brightfield, darkfield and polarised) for viewing different sample types
• Automated switching between lasers and the effect on Raman spectra
• Automated daily silicon calibration using an internal reference
• Sample holders and accessories for films, powders, gems, liquids and larger samples
• How Raman imaging can reveal spatial information

On completion, you will have learned not only how to collect good Raman data, but you will also have seen this demonstrated on a real instrument by our Raman experts.

Watch now