PerkinElmer RamanMicro 200 Series, Getting Started Manual

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32 . RamanMicro 200 Series Getting Started Guide
The Czerny–Turner Spectrograph
The RamanMicro 200 is equipped with a Czerny–Turner spectrograph. The Czerny–Turner
spectrograph is the most commonly used spectrograph design in Raman spectroscopy. Here,
light is focused into the spectrograph, collimated and shone on a grating which disperses
that light in one dimension. The light is then focused onto a photo-sensitive CCD detector
(typically 1024 pixels wide), which detects the Raman spectrum.
Figure 11 Schematic of the Czerny-Turner spectrograph
The Czerny–Turner spectrograph is equipped with a fixed grating, and the range of light
falling on the CCD can be factory configured to be approximately 95–3200 cm
−1
at a
resolution of about 8 cm
−1
.
Entrance
Slit
Lens #2
CCD
Detector
Lens #1
Grating