Raman spectra exhibit numerous features that are specific to molecular structure and provide valuable ‘fingerprints’ for comparing and differentiating materials.
For different applications, the FORAM Raman microscopes can supplied with a choice of 532nm, 685nm, or 785nm laser and have a spectral range of 400 to 2000 wavenumbers and 8 wavenumber resolution to meet the user’s requirements. The instruments have an integral video microscope to assist sample selection and a turret of four objective lenses provide on screen magnification of up to x500. A large XYZ translation stage, which can support whole documents, allows alignment and focussing onto areas of interest as small as 5 microns. The system is controlled with easy-to-use on screen menus and the software provides for baseline correction of spectra to remove background fluorescence, automatic spectral comparisons, and data archiving with search and match facilities.