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Fiber coupled FT-IR spectrometer | SIMTRUM Photonics Store

Products / Light Analysis /Spectrometers /FT Infrared Spectrometer(900-16000nm) /Fiber coupled FT-IR spectrometer(2000-16000nm) /
Fiber coupled FT-IR spectrometer(2000-16000nm)
Overview Specifications Software Q&A Related Products Order Now！
SIMTRUM'S Fiber coupled FT-IR spectrometer is an all-fibered alternative. It features the same components as the FT-MIR spectrometer, with the addition of an internally mounted optical source that enables to modulate light before coupling it to the output port of the device. This architecture is thus more robust to external perturbations such as background thermal emission, as such parasitic light would not go through the interferometer before reaching the detector. Our FT-IR-FC is ideal for fibered applications with the exception of diffuse reflectance probes, which benefit from the higher throughput provided by direct feeding from a standalone source.

 

4-TE or Liquid-Nitrogen cooled MCT detectors available

The FTIR-FC can be equipped with both 4-stage thermo-electrically (TE) cooled or liquid-nitrogen cooled MCT detectors. The TE-cooled detectors in the FTIR-FC are the most sensitive TE-cooled detectors availabe on the market and offer a reliable and maintenance-free operation. For ultimate sensitivity levels, the FTIR-FC can also be equipped with a liquid-nitrogen cooled detector. In the NIR, the FTIR-FC can also feature an extended InGaAs detector.

 

Principle

Permanentely aligned interferometer

The heart of the FT-Rocket is dual corner-cube (retro-reflector) interferometer. The two corner-cubes are fixed to a common swinging arm, which rotates to create an optical path difference (with respect to the beam splitter) in the two arms of the interferometer.

This type of design is called a permanently aligned interferometer. This particular arrangement of the interfeormeter 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.

 

Solid-state reference laser

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.

 

Features

  • Internal light source
  • Ideal for operation with fibered probes
  • All-in-one solution: source, interferometer, detector and fiber-couplers
  • Most compact fiber-coupled FT-IR on the market
  • Available with TE-cooled or liquid-nitrogen cooled MCT detectors

Applications

  • Diffuse reflectance measurement
  • Optical fiber application
  • Material identification and quantification

 

 

General Parameters
Model LA-AR01-FTNIR-FC-025-2TE LA-AR01-FTMIR-FC-060-4TE LA-AR01-FTMIR-FC-085-4TE LA-AR01-FTMIR-FC-120-4TE LA-AR01-FTMIR-FC-160-LN2 LA-AR01-FTMIR-FC-160-DLA
  Beam-splitter material CaF2 ZnSe
  Spectral Range [cm-1] 11000-4000 5000-1660 6600-1200 5000-830 5000-650
  Spectral Range [μm] 0.9-2.5 2-6 1.5-8.5 2-12 2-16
  Detector Type InGaAs(2-TE cooled) MCT (4-TE cooled) MCT (LN2 cooled) DLATGS
  Detector Peak D*[cm Hz1/2 W-1] >2×10^11 >1×10^11 >8×10^9 >4×10^9 >5×10^10 >2.5×10^10
  Signal-to-noise ratio >100000:1 >80000:1 >40000:1 >40000:1 >70000:1 >8000:1
  Recommended fiber multimode silica fiber IFG (1-6μm) IFG (1-6μm)orPIR (3-18μm) PIR (3-18μm)
  Internal reference laser @975nm Temperature-stabilized, @850nm
  Power requirement 40W @12VDC 30W @12VDC
  Integrated light source 20W QTH bulb(285°K) 20W SiC globar(1550°K)
  Resolution(unapodized) [cm-1] 2, 4, 8 (user selectable)
  Wavenumber repeatability ＜10 PPM
  Scan frequency >4 Hz @ 4cm^-1
 
Other Parameters
  Fibered interface Fiber core up to ∅ 900μm, NA=0.3, SMA 905 connector
  Interferometer type Permanently aligned, double retro-reflector design
  A/D Converter 24 bit
  Operating temperature 10℃-40℃
  Communication Interface USB 2.0
  Software Interface Windows 7/10 API for controlling the instrument via our DLL
  Dimensions 180mm×160mm×80mm
  Weight 2200g (excluding LN2 dewar)

We fully appreciate and value the multiple benefits that a dedicated, performant and reliable software can bring to your application. Automatic data collection, parameters changes, status diagnosis and many other essential tasks should be implemented as simply and as efficiently as possible in order to get the most out of your spectrometer. This philosophy led to the development of a multi-threading, cross-platform and versatile software application, the digital acquisition system or AoDAQ.

The AoDAQ simultaneously takes care of:

1. Handling communication with the FT-IR via USB

2. Processing raw signals to deliver a spectrum

3. Running a TCP Ethernet server

The AoDAQ can be installed on all sorts of computers, from desktop machines to embedded, low-power single board computers. Thanks to the hosting of a TCP server, the instrument data and parameters can be accessed locally and/or remotely. All communication with the instrument eventually reduces to a set of TCP/IP commands that allow to quickly acquire data, adjust parameters, monitor the instrument status etc. using the programming environment of your choice. 

 


What is the equivalent wavelength resolution of my FT-IR ?

Owing to its operating principle, a FT-IR delivers a spectrum uniformly sampled over a given spectral range in wavenumbers (ν), with units of cm-1. The wavenumber is simply defined as the inverse of the wavelength (λ). The resolution of an FT-IR is constant in wavenumber (Δν), but varies with wavelength (Δ λ) due to the inverse relationship between these two units. The conversion betwen wavenumber resolution and wavelength resolution is Δλ=λ2 · Δν and is shown in the graph below:

Resolution in [nm] as a function of wavelength in FT-IR systems

 

How to choose the best detector for my application ?

The choice of a detector is a most sensitive one as it contributes to a large extent to the overall quality of your measurement. We offers several types and models of detectors, namely extended InGaAs detectors (2 stage thermo-electric cooling), HgCdTe (MCT) detectors with either thermoelectric cooling (4 stages) or liquid nitrogen cooling as well as pyroelectric (DLATGS) detectors. Selection of a given detector is application driven, and depends on the spectral signatures that you are willing to analyze. In order to deliver a faire comparison between various types of photodetectors (or thermal detectors), the most widespread metric is the specific detectivity (labelled D*), which is given in the figure below for all of our available detectors.

Specific detectivity (D*)

 

What configuration should I select for my application?

We offers two distinct classes of spectrometers: FTIRs without a built-in light source, such as the LA-AR01-FTMIR-120, and FTIRs which integrate a built-in emitter, such as the LA-AR01-FTMIR-FC-120. Source-free instruments can be used to characterize both samples (relative measurements) and optical sources (absolute measurements). FTIR with built-in sources can only be used to perform relative measurements, as light is modulated by the interferometer before being output. This configuration has the advantage of being robust to signal modification induced by stray-light or background thermal radiation.

Light routing in the LA-AR01-FTMIR-120 (up) and the LA-AR01-FTMIR-FC-120 (down)

 


Related products

Model Wavelength Range Resolution Detector  
  FT-NIR spectrometer 900-2500 nm 2/4/8 cm-1(user selectable) Extended type InGaAs PIN photodiode, 2TE cooled
  FT-MIR spectrometer 200-16000 nm 0.5/2/4/8cm-1(user selectable) MCT (4-TE cooled)
MCT (LN2 cooled)
DLATGS
  Fiber coupled FT-IR spectrometer 200-16000 nm 2/4/ 8cm-1 (user selectable) InGaAs (2-TE cooled)
MCT (4-TE cooled)
MCT (LN2 cooled)
  VIS-NIR-FIB spectrometer 350-2500 nm <1.5 nm silicon array detector (3648 pixels) 16-bit ADC.extended range InGaAs photodiode, 2TE cooled, 24-bit ADC.
  VIS-NIR-DR spectrometer 360-2500 nm 5 nm Extended range InGaAs detector

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Compare Model Drawings & Specs Availability Reference Price
(USD)
LA-AR01-FTNIR-FC-025-2TE
Spectral Range：0.9-2.5μm,Detector Peak D*：＞2×10^11cm Hz^1/2 W^-1,Signal-to-noise ratio：＞100000:1,Detector Type:InGaAs(2-TE cooled),Resolution ：2/4/ 8cm-1 (user selectable) 		4-6week $29238.01
LA-AR01-FTMIR-FC-060-4TE
Spectral Range：2-6μm,Detector Peak D*：＞1×10^11cm Hz^1/2 W^-1,Signal-to-noise ratio：＞80000:1,Detector Type：MCT(4-TE cooled),Resolution ：2/4/ 8cm-1 (user selectable) 		4-6week $31909.50
LA-AR01-FTMIR-FC-085-4TE
Spectral Range：1.5-8.5μm,Detector Peak D*：＞8×10^9cm Hz^1/2 W^-1,Signal-to-noise ratio：＞40000:1,Detector Type：MCT(4-TE cooled),Resolution ：2/4/ 8cm-1 (user selectable) 		4-6week $31909.50
LA-AR01-FTMIR-FC-120-4TE
Spectral Range：2-12μm,Detector Peak D*：＞4×10^9cm Hz^1/2 W^-1,Signal-to-noise ratio：＞40000:1,Detector Type：MCT(4-TE cooled),Resolution ：2/4/ 8cm-1 (user selectable) 		4-6week $31909.50
LA-AR01-FTMIR-FC-160-LN2
Spectral Range：2-16μm,Detector Peak D*：＞5×10^10cm Hz^1/2 W^-1,Signal-to-noise ratio：＞70000:1,Detector Type：MCT(LN2 cooled),Resolution ：2/4/ 8cm-1 (user selectable) 		4-6week $34877.83
LA-AR01-FTMIR-FC-160-DLA
Spectral Range：2-16μm,Detector Peak D*：＞2.5×10^8cm Hz^1/2 W^-1,Signal-to-noise ratio：＞8000:1,Detector Type：DLATGS,Resolution ：2/4/ 8cm-1 (user selectable) 		4-6week $31909.50

LA-AR01-FTMIR-FC-160-DLA - Parameter

LA-AR01-FTMIR-FC-160-LN2 - Parameter

LA-AR01-FTMIR-FC-120-4TE - Parameter

LA-AR01-FTMIR-FC-085-4TE - Parameter

LA-AR01-FTMIR-FC-060-4TE - Parameter

LA-AR01-FTNIR-FC-025-2TE - Parameter

LA-AR01-FTMIR-FC-160-DLA - Download

LA-AR01-FTMIR-FC-160-LN2 - Download

LA-AR01-FTMIR-FC-120-4TE - Download

LA-AR01-FTMIR-FC-085-4TE - Download

LA-AR01-FTMIR-FC-060-4TE - Download

LA-AR01-FTNIR-FC-025-2TE - Download

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