PerkinElmer Raman IdentiCheck, Руководство по началу работы

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32 . Raman IdentiCheck Getting Started Guide
Spectrograph Detector Systems
The Raman IdentiCheck is equipped with an Echelle spectrograph.
The Echelle Spectrograph
Figure 7 Schematic of the Echelle Spectrograph
PerkinElmer’s Echelle detector is shipped in the Raman IdentiCheck. 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 7). 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 8 Strips of light on the CCD detector using the Echelle spectrograph.
Range 1 + Range 2 + Range 3 + Range 4 = Complete Spectrum (all ranges acquired
simultaneously).
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