Raman spectroscopy is a technique for characterising substances. It uses vibrational, rotational frequencies and low-frequency modes to generate a unique spectral fingerprint that reveals what the substance is.

ISI is particularly expert in Raman spectroscopy. Our HES instrument uses a fibre rather than a slit to deliver much higher etendue than found in standard spectrometers and therefore lends itself to making Raman measurements. We are happy to offer advice and consultancy making Raman measurements.

Raman shifts are typically in wavenumbers, which have units of inverse length (cm^-1). There is therefore a need to convert between spectral wavelength, wave numbers and frequency of shift in the Raman spectrum. Simply enter the numbers and ISI’s Raman shift calculator can provide the conversions for you.