The FT-NIR Rocket near infrared (NIR) Spectrometer

Compact Fourier Transform Spectrometer (FTIR) for near infrared spectroscopy. 

fourier transform spectrometerThe FT-NIR Rocket is a fibered scanning Fourier Transform Spectrometer (FTIR) sensitive in the NIR range from 0.9-2.6 or 0.9-1.7 µm, optionally snesntivity can be go down to 600nm. This new fibered FTIR module combines robustness with compact design. This new generation of NIR spectrometers is based on a self-compensated interferometer and has a build-in solid state stbilized reference laser to assure reproductible results in wavelength. The input inteface is a SMA fiber connector which makes the spectrometer compatible with other standard SMA accessories.

The FTNIR Rocket is an ideal product for reproducible chemiometrical analysis due to its high wavelength and intensity stability. The FTNIR Rocket's single photo-diode detection not only allows for attractive pricing, but also guarantees that gain fluctuation, dark current fluctuations, and defect pixels will not be present. Unlike grating spectrometers, this device will not suffer from second or third order ghost spectral contributions.

An Infrared version of the FTIR-Rocket is also offered here.

Additionally, Arcoptix is proud to offer the ArcSpectroHT-NIR: a unique static Fourier Transform spectrometer with no moving parts which is ideal for analysing diffusing parts. For more information please click here.

PRICE 14'900 EUR! (0.9-2.6 µm with software)

  • No baseline drift (due to device Fourier principle)
  • High wavelength precision (stabilized reference laser)
  • High stability in wavelength position and intensity (no baseline drift)
  • High resolution (1-9 nm)
  • Fibered system (NIR multimode fibres)
  • Cost effective (single NIR photo-diode)
  • Large wavelength range (0.9-2.6 µm)
  • version down to 600nm available on demand
  • No second order spectral contributions
  • USB powered

Arcoptix Fourier Transform VIS-NIR, NIR and IR spectrometers:

Arcoptix offers a variety of spectrometers with different types of interferometers and detectors. If you don't see what you need in the list of available models below, please contact us as we also fill special orders on demand.

Models NIR 0.9-1.7 NIR 0.9-2.6 VIS-NIR 0.6-2.6 HT-NIR (link) Rocket IR (Link)
Spectral Range [nm] 0.9-1.7 µm 0.9-2.6 µm 0.6-2.6 µm 0.9-1.7 µm 2.0-6.0 µm
Detector Type InGaAs PIN InGaAs PIN InGaAs PIN Cooled InGaAs 512 (pixel detector array) Cooled MCT with optically immersed lens
Signal-to-Noise Ratio (25 averaged measurements full detector dynamic used, broadband diode) > 5'000:1 > 5'000:1 > 5'000:1 > 500:1
Ideal for diffuse samples
> 5'000:1
Principle Features Specs Accessories Software Distributors Downloads Videos

How does it work?

FTIR spectrometer The FTIR-Rocket uses a self-compensated pendulum Interferometer.This means that off-axis movements created by vibrations or temperature variations of the mirrors are compensated for by the two arms of the interferometer. The optical path difference, used to calculate the spectra, is now unaffected by these vibrations. Thus the architecture of this FTIR system makes the system far less sensitive to vibrations or temperature variations. A solid state temperature-controlled laser is coupled into the interferometer to control the movement of the mirrors. These telecom lasers are more cost-effective, compact and less demanding in maintenance than their classic HeNe laser counterparts.

NIR spectrometer The FT-NIR Rocket has a SMA connector for a fibered light input and is ideal for making fibered measurement setups. Standard grating spectrometer accessories (cuvette holder, halogen lamp or reflections probes) can be used with this product. Ideally the spectrometer should be connected with 0.6mm core diameter NIR fibers. For most uses, a 10-20W halogen lamp light source is sufficient.


  • Environmental monitoring
  • NIR and MIR Pulsed LASER measurements (see application notes)
  • Solar cell characterization (see application notes)
  • Security and defense
  • Cosmetics
  • Gas detection (see application notes)
  • Agriculture
  • Food, beverage & dairy
  • Plastics
  • Process control (Chemical monitoring, Pharmaceutical manufacturing, Solar cells characterization)
  • Textile
  • And much more...




Features and benefits

Attractive pricing:

More cost-effective solutions are possible now than ever before because the FT-NIR Rocket makes use of a few small optical elements based on a relatively low-cost technology. 

Self compensated Interferometer principle:

  • Solid state laser control makes device compact and reduces maintenance costs. No high voltage driving as for He Ne lasers.
  • Alignment of the device is simple and robust.
  • The multipass self compensated interferometer presents an optimal configuration for miniaturization
  • Thanks to its symmetry the interferometer remains stable with temperature variations and vibrations.

Optional parameter:

Variable gain and resolution permit to optimize measurement parameters.




General Specs table

Features FT-NIR Rocket
Interferometer type Self-compensated multi-pass
reciprocating interferometer
Spectral resolution in wavelength:
at 1000nm:
at 1700nm:
at 2600nm:

 0.8 nm
  2 nm
  5 nm

Spectral resolution in wavenumber: 4cm-1
Wave-number accuracy 1cm-1 @ 4000cm-1(25± 5 °C)
SNR (Full dynamic range- signle measurement, broadband diode) >1'000:1
Detector Extended type InGaAs photodiode
Effective Measurement time (averaging mode) 1 Scan/s
Control laser Solid-state 850nm
Optical Fiber Connector SMA 905
Optical entrance (optical fiber core) up to 1mm, NA=0.3
A/D Converter 24 bit
Operating temperature 10°C-30°C
Operating Voltage 5V (USB powered). Except for MIR
version (TE cooling need external powering).
Product Weight 850 g
Product Dimensions (including
180mm x 160mm x 80mm
Communication Interface USB 2.0
Software Interface Windows XP/Windows 7




USB Infrared lamp:

IR spectrometer

The Arcoptix USB lamp is a compact USB-powered lamp. The USB lamp features a SMA 905 connector for easy coupling in optical fibers. Via these fibers, the lamp can be connected to a reflection probe, an integration sphere, or a reflection probe.

Additionally, the USB lamp features a smart power control for high lamp stability, a mechanical variable shutter for power output control and an integrated cuvette or filter holder. Since this lamp is USB-powered, it is ideal for on-the-field spectral measurements.

This USB lamp is available in two versions: one optimized for VIS-NIR, and a version for the MIR region:

Spectral range (nm) 00 – 2600 nm
Collimation optics BK7


  • Integrated slot for cuvettes and samples
  • Mechanical intensity tuning
  • Large Wavelength Range
  • Excellent stability
  • USB powered with optional external line
Lamp type Halogen
Bulb temperature 2230 K
Bulb live time 30’000 h
Stability < 1%
Fiber optical connector SMA 905
Operating temperature 10° - 40°C
Operating voltage 5 V - 0.5 A (USB powered)
Shutter Mechanical
Communication interface UBS 2.0
Weight 450 g
Product dimensions 70 mm x 70 mm x 60 mm
Software interface Windows XP, Windows 7

spectroscopyDOWNLOAD pdf description of USB lamp



The FT-NIR-Rocket is packaged with a free program (basic software package) compatible with Windows XP, 2000, and Windows 7 (32 and 64 bits).  For Windows CE users, a light version of the software package is offered. The FT-NIR can be connected to a laptop computer via ethernet or USB or to a compact embedded computer with windows CE.

The Basic software Package includes:Fourier Transform Infrared Spectroscopy

  • Configure measurement parameters (integration time, averaging).
  • Display real time spectral measurement results
  • Choose Transmission or Reflection mode
  • Some specific features related to Fourier transform spectrometry: choose apodization (automatic recognition option), look and save the interferograms in different FTIR standard formats.
  • Usual features such as save, open, zoom, rescale...

In collaboration with LABCOGNITION in Germany we offer the following optional software packages:

IRAnalyze software package:fourier transform spectrometer

This package is a highly sophisticated IR spectrum interpretation tool. Based on an IR spectrum, it provides you with automatic results for IR bands to functional group correlations and their characteristic frequencies. You can also use it as a comprehensive electronic dictionary to browse frequencies for correlated IR bands.


Quantity Add-on module:IR spectrometer

This module specializes in multivariate data analysis with quantitative methods like PLS and MLR. A convenient and intuitive wizard guides you step-by-step through calibration model development. Even for non-experienced users, complex statistical methods become easy to use.


Math Add-on module:FTIR spectrometer

This module contains a set of standard manipulation operations used in spectroscopy, such as normalization, baseline correction, derivative, peak picking and more. Other special operations are also available, including (but not limited to) multiplicative scatter correction, standard normal variate correction, and thickness correction.

Search Add-on module:

This module is an ideal add-on to archive your spectroscopic data and related information. It includes spectrum and full text search functionality on spectral libraries of various library formats or directly in the data in the file system.



Spectrometers Distributors:

Switzerland and Rest of the World NIR spectrometer
Japan IR spectrometer
Europe infrared
South Korea
Worldwide IR spectrometer




spectroscopyDOWNLOAD pdf description of FT-NIR Rocket

Fourier Transform Infrared SpectroscopyDOWNLOAD pdf Measurement examples

Fourier Transform Infrared SpectroscopyDOWNLOAD pdf Application Solar cell characterization

Fourier Transform Infrared SpectroscopyDOWNLOAD pdf Application Pulsed LASER measurement 

spectrometryDOWNLOAD pdf Tutorial about Fourier Transform Spectrometry

fiberedDOWNLOAD pdf description of USB lamp




Transmission Measurement Tutorial

Diffuse Reflection Measurement Tutorial

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