ARCoptix - Model FT-NIR Rocket - Fibered NIR Spectrometer with A Spectral Range from 900 to 2600 nm
If you are looking for a high performance, compact and affordable NIR spectrometer, the ARCoptix FT-NIR Rocket is the instrument that you need. Thanks to its permanently aligned interferometer and solid-state reference laser, the FT-NIR Rocket offers excellent stability in both intensity and wavelength scales. The FT-NIR Rocket is compatible with light sources and sampling accessories (like fibers, cuvette folder, ...) typically used with array-detector based NIR spectrometers.
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Details
The FT-NIR Rocket is a high-performance system combining high resolution, broad wavelength range and excellent sensitivity. FT-NIR functioning principle permits to measure over a much broader range than grating spectrometers that are limited to 2100nm. Its outstanding stability in both wavelength and intensity scales makes it an ideal tool for highly reproducible chemometric analysis. In comparison to array-photodiode NIR spectrometers, the single photodiode operation of the FT-NIR ensures no defect pixels, no gain variation among pixels and no dark-current drifts. Also, the device does not suffer from stray-light as grating spectrometers. Finally, all these advantages come at a very attractive pricing!
Due to its functioning principle the FT-NIR is superior to any grating spectrometer on the market!
ARCoptix also proposes a Mid-IR version of the FT Rocket with spectral ranges of 2-6 or 2-12μm.
- Wide wavelength range 0.9-2.6μm
- High resolution 4cm-1
(equivalent to <0.5nm@1um and <2.5nm@2.5um) - Excellent stability in intensity & wavelength scale (no dark current-induced drift, internal reference laser)
- Very good sensitivity (available with 2TE cooled InGaAs)
- Compact and rugger, easy-to-use fiber input system
- Cost effective (single NIR photodiode)
Principle
Permanentely aligned interferometer
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..
Specifications
- Type of interferometer : Permanentely aligned, double retro-reflector design
- Spectral range [cm-1] : 3800 - 11000
- Spectral range [nm] : 900 - 2600
- Spectral resolution in wavenumber: : 4cm-1
- SNR (8cm-1 resolution, 1 minute scan time) : >200'000:1
- Long term baseline intensity stability : < 2% (1100-2500nm) over 10 hours
- Wave-number repetability : < 10ppm
- Detector : Extended type InGaAs PIN photodiode, optionally 2TE cooled
- Effective measurement time: 1 spectrum / second in continuous mode aquisition
- Optical fiber connector : SMA 905
- Optical entrance : < 1mm (fiber core diameter) NA=0.25
- Reference laser : Solid-state 795nm, temperature stabilized.
- A/D converter : 24 bit
- Power requirements : 7.5 - 12V / 1-6W depending on versions
- Operating temperature : 5°C-40°C
- Communication interface : USB 2.0 (optionally Ethernet)
- Software interface : Windows 7 & 10
- API for controlling the instrument via our DLL
- Dimensions : 180mm x 160mm x 80mm
- Weight : 1700g
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