Raman spectroscopy imaging

03/01/1999

Raman spectroscopy imaging

The Raman Imaging microscope combines scanning spectroscopy and 2-D imaging in a single system. It scans to a spatial resolution of 1 ?m and a spectral resolutiondown to 0.2 cm?1, providing graphic output in the form of 2D Raman images and 2D and 3D spectral plots. The instrument is well-suited to inspection of semiconductors and study of polymer coatings, providing a built-in confocal feature for measurement of changes in coating depth to a resolution of 1.5-2 ?m. The microscope performs its scan using a 25-mW laser. Choices include Ar+ (488, 514 nm) and doubled Ar+ (244 nm), HeNe (633 nm), and semiconductor (~780 nm) lasers. While the standard microscope scans across the full range from 200 to 4000 cm?1, optional extensions provide ranges of 100 to 4000 and 5000 to 7000 cm?1. The instrument can be customized for remote analysis, high-temperaure measurement up to 1500?C, low-temperature measurement down to 4K, and large-area scanning without stitching. Electrochemical and high-pressure cells are available. Renishaw Inc., Schaumburg, IL; ph 408/234-0958, fax 408/944-9139.