What is MCT detector FTIR?
The MCT (Mercury-Cadmium-Telluride) IR (infrared) Detector Module is a thermoelectrically cooled detector element and preamplifier package optimized for acquiring spectral data with the LaserTune Quantum Cascade Laser (QCL) source.
How does MCT detector work?
The MCT detector is a semiconductor and the electrons present in it absorb IR light and move from valence band to conduction band. These electrons in the conduction band generate an electrical current proportional to the IR intensity.
What is FTIR mapping?
FTIR mapping is an important tool that can help us to complement our study of fouling phenomena by assessing chemical distribution of the different components of the system on the membrane surface at a millimetre scale.
How does FTIR imaging work?
How does FTIR work and why use it? The FTIR uses interferometry to record information about a material placed in the IR beam. The Fourier Transform results in spectra that analysts can use to identify or quantify the material.
Why does FTIR need liquid nitrogen?
Cooling to liquid nitrogen temperature is needed to avoid excitation of electrons by thermal motion. These detectors do not cover the complete IR range because there is a minimum energy needed to excite an electron, corresponding to a long wavelength limit.
How does a focal plane array work?
In photonics, a focal plane array (FPA) is essentially an array of light detectors, which is placed in the focal plane of an imaging system (a simple lens or an objective, possibly a telescope). It would actually be more accurate to talk about an image plane instead of a focal plane, which is not exactly the same.
Why are thermal detectors not used in FTIR spectroscopy?
What type of technique is FTIR spectroscopy?
Fourier transform infrared spectroscopy (FTIR) is a technique which is used to obtain infrared spectrum of absorption, emission, and photoconductivity of solid, liquid, and gas. It is used to detect different functional groups in PHB. FTIR spectrum is recorded between 4000 and 400 cm−1.
How is FTIR different from IR?
FTIR spectrometers have several prominent advantages: (1) The signal-to-noise ratio of spectrum is significantly higher than the previous generation infrared spectrometers. (2) The accuracy of wavenumber is high. Due to these advantages, FTIR Spectrometers have replaced dispersive IR spectrometers.
What are the advantages of MCT for infrared imaging?
DRS’ Mercury Cadmium Telluride (MCT), also known as HgCdTe, provides three overriding advantages as an infrared imaging material. First and most important is its ability to deliver optimal performance at higher operating temperatures than InSb, for size, weight and power (SWaP) reductions and improved thermal management.
What are the advantages of a MCT detector?
However, DRS has developed extraordinary High Operating Temperature Infrared (HOT-IR™) MCT detector technology, which can perform at significantly elevated temperatures to minimize these trade- offs. Five years in the making, HOT-IR™ means that the detector does not need to be cooled down to 77°K.
Where are Teledyne IR FPA’s used in space?
Teledyne’s IR FPA’s are to be used in prestigious missions such as the James Webb Space Telescope (JWST) and Euclid and are currently flying on the Hubble Telescope and the Wide-field Infrared Survey Telescope (WISE). Learn More: Infrared Sensors for Space Infrared HgCdTe (MCT) Products
What kind of MCT is used for HgCdTe?
Infrared HgCdTe (MCT) Teledyne Imaging has a reputation for producing the highest performance Focal Plane Arrays (FPAs) using Molecular Beam Epitaxy (MBE) technology to grow HgCdTe (also known as Mercury Cadmium Telluride or MCT) detector substrates.