PerkinElmer RamanFlex 400, Getting Started Manual

Page: 32 / 94

32 . RamanFlex 400 Series Getting Started Guide
Spectrograph Detector Systems
The RamanFlex 400 Series are equipped with an Echelle spectrograph.
The Echelle Spectrograph
Figure 10 Schematic of the Echelle Spectrograph
PerkinElmer’s Echelle detector is shipped in the RamanFlex 400 Series. The system contains
two components; the Echelle spectrograph and a two-dimensional CCD detector. The system
works by dispersing the light in two dimensions by using two gratings (Figure 10). The first
grating disperses the light horizontally onto the second grating, where the light is further
dispersed vertically onto the CCD detector. The light is spread over a number of strips on the
CCD that are read simultaneously, therefore a full spectral range (at high resolution) can be
achieved with one acquisition.
Figure 11 Strips of light on the CCD detector using the Echelle spectrograph
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