Techniques for Collecting IR Images and Spectra . 79
ATR Objective Specification
The ATR cassegrain is fitted to the imager and the ATR crystal holder is supplied separately.
ATR crystal materials
Germanium or Silicon
Range of measurement
Ge: 5500 cm
−1
to 600 cm
−1
Si: 7800 cm
−1
to 800 cm
−1
Area of contact with sample
Nominally 100 µm diameter flat surface. Single internal reflection from surface.
Maintenance
The ATR assembly may be removed (see
Removing the ATR Crystal Holder from the Imager
Cleaning the ATR Objective Crystal
on page 87), or replaced and
aligned by the user (see
Fitting the ATR Crystal Holder to the Imager
on page 80).
A replacement crystal is provided with each objective.
Summary of Contents for Spotlight 400 Series
Page 1: ...Spotlight 400 Series User s Guide MOLECULAR SPECTROSCOPY...
Page 6: ......
Page 7: ...Introduction...
Page 13: ...Warnings and Safety Information...
Page 26: ...26 Spotlight 400 Series User s Guide...
Page 27: ...Overview of the Spotlight Imaging System...
Page 39: ...Getting Ready to use the Imaging System...
Page 46: ...46 Spotlight 400 Series User s Guide...
Page 47: ...Preparing Samples...
Page 62: ...62 Spotlight 400 Series User s Guide...
Page 63: ...Techniques for Collecting IR Images and Spectra...
Page 94: ...94 Spotlight 400 Series User s Guide...
Page 95: ...Maintenance...
Page 106: ...106 Spotlight 400 Series User s Guide...
Page 107: ...Appendices...