The FT-IR "Rocket" is a robust, small-footprint, lightweight and high performance FT-IR spectrometer. The FT-IR Rocket can be used in a fiber connected version or a free space version. The device is very useful for IR measurements that needs fiber coupling or any other special arrangements like for IR light source characterization.
FT-IR "Rocket" offers high resolution and sensitivity thanks to the use of thermoelectrically cooled MCT (Mercury-Cadmium-Telluride) detectors. Its permanentely aligned interferometer and its solid-state reference laser ensure that the highest performance is delivered at every scan. The system has high stability in both wavelength and intensity scales, making it an ideal tool for highly reproducible chemiometrical analysis. The FT-MIR and FT-IR are also used by many of our customers for characterizing infrared lasers, who are using is an an Optical Spectrum Analyzer (OSA).

FT-MIR Rocket 2-6μm

FT-IR Rocket 2-12μm

The FT Rocket infrared spectrometer is proposed in 2 standard versions: The FT-MIR 2 - 6μm, FT-MIR 1.5 - 8.5μm and the FT-IR 2 - 12μm. Both offer a resolution of 4cm^-1. The main differences lie in the beamsplitter material (CaF2 or ZnSe) and the sensitivity of the detector: the narrower band 2-6μm detector has a much better sensitivity. On request we can fit the detector to your needs.

The heart of the FT-Rocket is dual corner-cube (retro-reflector) interferometer. The two corner-cubes are solidary to a common swinging arm, which rotates to create an optical path difference in the two arms of the interferometer.
This type of design is called a permanently aligned interferometer, as the alignment of the system is known to be the most robust against vibrations and temperature drifts. It never has to be realigned.
The swinging arm of the interferometer rotates on wear-free flexure system, making this mechanical system extremely robust and durable.

For measuring the movement of the mirrors, a solid-state reference laser is coupled into the interferometer. Compared to classic HeNe lasers, the solid-state lasers that we use are more compact and have a much longer life-time. They have a very low temperature-induced wavelegnth drift and, when kept at constant temperature with a Peltier element, their wavelength can be stabilized to a few PPM, thus providing a very accurate and reproducible wavelength scale. This is crucial for ensuring a day-to-day and unit-to-unit consistency.