Design Considerations for a Portable Raman Probe Spectrometer for Field Forensics

Figure 2

Comparison of nearly blended Raman peaks of sodium chlorate (scaled to match). The sodium chlorate Raman spectrum recorded with the Headwall/Andor demo grating spectrograph and two-dimensional silicon-CCD is shown in green; the spectrum recorded with the DeltaNu Advantage demo grating spectrograph and InGaAs two-dimensional CCD is shown in red; the Bruker FT-Raman spectrum with nitrogen-cooled Ge detector is shown in blue. Data from the grating spectrographs were acquired in 1 s full integration time. Inset shows an expanded area of the residual scattered light.