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80 . Spotlight 200 User's Guide
ATR Objective Specification
The ATR cassegrain is fitted to the microscope and the ATR crystal holder is supplied
separately.
ATR crystal materials
Germanium (Ge), Silicon (Si), and Diamond Coated Germanium
Range of measurement
−1
Ge: 5500 cm
to 600 cm
−1
Ge/Di: 5500 cm
to 600 cm
−1
Si: 7800 cm
to 800 cm
Area of contact with sample
Nominally 100 µm diameter flat surface. Single internal reflection from surface.
Maintenance
The ATR assembly may be removed (see
Microscope
on page 87), cleaned (see
replaced and aligned by the user (see
page 81).
−1
−1
−1
Removing the ATR Crystal Holder from the
Cleaning the ATR Objective
Fitting the ATR Crystal Holder to the Microscope
Crystal on page 90), and
on
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