IFS 125HR/ IFS 125M FT-IR Spectrometer
Product Overview
The Bruker Optics IFS 125HR FT-IR spectrometer offers the highest resolution available over a wide wavelength range from 5 cm-1 in the Far-IR to 50,000 cm-1 in the UV. Each component of the new IFS 125HR is optimized to approach the theoretical limit of sensitivity. The scanner allows collection of data at very high resolution without beam folding. With the improved electronics, freerunning delta-sigma 24 bit ADC and Ethernet TCP/IP connectivity, the IFS 125HR provides the performance that any demanding application may need. Automatic detector-,beamsplitter- and accessory recognition assists the user in setting-up experiments. The spectrometer is completely controlled by the user-friendly OPUS software running on a Windows PC.
The new IFS 125/M is the mobile version of the well-established IFS 125/HR spectrometer, and offers the highest resolution available from a commercial mobile FT-IR spectrometer. The standard resolution is 0.008 cm-1, with an option for 0.0035 cm-1. The mobile IFS 125/M is dedicated to gas phase emission studies frequently applicable to atmospheric research. The IFS 125/M can be mounted on ships, airplanes, and other mobile vehicles for easy transportation to remote locations.
Studies of physical-chemical primary processes require very high spectral resolution to derive the true molecular quantum motion from the absorption spectra. In addition, high resolution FT-IR spectroscopy is ideal for investigating changes in stratospheric gas concentrations due to its sensitivity and selectivity.
Product Features:
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- The permanently aligned interferometer has a 30° angle-of-incidence. The narrow angleof-incidence makes more effective use of the beamsplitter in addition to reducing beam polarization effects. The beam is split to the fixed and moving cube-corner retroreflectors of the modified Michelson interferometer. The moving mirror is translated on a hybrid bearing whose design ensures beam integrity over the extremely long optical path difference, which can be greater than 9 meters.
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- The source compartment of the IFS 125HR can accommodate three water-cooled sources with computerized selection. In addition, there is a computer-selectable port for an ultra-violet source or external emission experiments. The source beam exits at a focus to the interferometer compartment.
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- There are two large chambers with focused beams which accommodate a wide variety of sampling accessories including long path gas cells and cryostats. To enhance flexibility, each sample chamber can be equipped with an additional exit port. Flaps isolate the sample compartment to preserve vacuum in the rest of the optics during sample change or accessory installation. At the sample position a 1:1 image of the input aperture is provided.
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- The detector compartment can house up to four internal and two external detectors. All six detector positions are accessible by beams from either sample chamber and detector selection is under computer control. Up to four liquid nitrogen cooled or room temperature detectors with new DigiTectTM technology can be mounted internally. The external positions provide room for large liquid helium cooled detectors such as far-IR bolometers or special high sensitivity mid-IR detectors such as Si:B or Ge:Au. For emission work a separate detector chamber may be mounted at the collimated beam exit port of the interferometer to maximize energy throughput in the NIR/VIS/UV range.
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