The third generation of multichannel Raman spectrometers

Abstract
A new multichannel Raman spectrometer is described. Each component of the optical part (sample compartment, sample adjustment provisions, filters, fore-monochromator, spectrograph) have been carefully designed to build a high quality, high reliability and easy to use instrument. The detection system uses a self-scanned photodiode array and the read-out electronics and data acquisition system are based on electronic circuits and logics specially developed to give a high dynamic range with low noise. Tests show that the Raman spectra recorded with this new instrument are of quality comparable to that obtained from a conventional single channel Raman spectrometer while the time required to acquire a spectrum is greatly reduced