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Choosing a Raman spectrometer

Watch our three-part webinar series to learn about selecting a Raman system. Renishaw's Raman spectrometers are packed with patented technologies for excellent performance and ease-of-use.

In these webinars our applications scientists describe the main components of a Raman spectrometer, to help you choose the right spectrometer for your research. See these principles in action with a demonstration on a variety of materials using an inVia^TM confocal Raman microscope.

Part 1: Choosing the best excitation laser wavelength for Raman analysis

Analysing a pill under a confocal Raman microscope

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.

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Part 2: What makes a good Raman spectrometer

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.

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Part 3: Demonstrating how to use a Raman microscope

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

Feature article: Feature article: Renishaw Raman spectroscopy articles and further reading image

About the inVia microscope

Discover more about how the inVia confocal microscope is suitable for your organisations applications.

Choosing a Raman spectrometer

Part 1: Choosing the best excitation laser wavelength for Raman analysis

Part 2: What makes a good Raman spectrometer

Part 3: Demonstrating how to use a Raman microscope

Further reading

About the inVia microscope