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. This fingerprint is revealed by the observed Raman shift, 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 IS-Instrument’s Raman shift calculator will provide the conversions for you.

ISI’s expertise lies 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 in making Raman measurements.