Fourier-Transform Infrared Spectrometer

IFS 66/5

The IFS 66/S is a Fourier Transform Infrared Spectrometer for investigation of the composition of gases, liquids and solids. The technique is based on the absorption of IR-radiation and changing the vibrational or rotational state.

This spectrometer has a resolution better than 0.25 cm^-1 at a frequency range from 7500 cm^-1 to 370 cm^-1. The aperture range is from 0.25 up to 12.0 mm with a total of 16 different apertures. The source is a watercooled SiC glowbar for measurements in the NIR. The beamsplitter is a Ge multilayer coating on KBr. The velocity of the mirror allows a scan rate from 0.055 cm/sec up to 10 cm/sec and up to 20 spectra/sec at a resolution of 8 cm^-1.  The spectrometer affords the opportunity to measure with an internal detector in the FTIR itself or outside of the spectrometer with an external detector.

This spectrometer allows Step Scan measurements. These are helpful for time resolved spectroscopy of repetitive events with a time resolution between 10 ms up to 5 µs. Also polarization studies, photoluminescence spectroscopy, two dimensional IR spectroscopy and photo induced absorbance spectroscopy are possible.

IFS 55

The IFS 55 is a Fourier Transform Infrared Spectrometer for investigation of the composition of gases, liquids and solids. The technique is based on the absorption of IR-radiation and changing the vibrational or rotational state.

The spectrometer has a resolution of 0.5 cm^-1 at a frequency range from 7500 cm^-1 to 370 cm^-1. It offers 16 scan velocities between 0.1 and 10.1 cm/s and a scan rate up to 20 spectra/sec at a resolution of 8 cm^-1. The spectrometer affords the opportunity to measure with an internal detector in the FTIR itself or outside of the spectrometer with an external detector.