公司简介
InfraRed Associates公司成立于1976年，并一直持续供应碲镉汞和锑化铟（HgCdTe and InSb）红外探测器超过25年。最初设在美国新泽西州，公司于1997搬迁至美国佛罗里达州。
InfraRed Associates专业人员加起来有超过100年的红外专业知识。新的加工技术已经产生了更高的效益，并允许InfraRed Associates公司以最具竞争力的价格提供最高品质的设备。
这些碲镉汞和锑化铟探测器带有各种冷却方案，其中包括：液氮，斯特林封闭循环（Stirling closed cycle）和热电冷却器。此外，我们现在可以提供常温碲镉汞探测器。我们还提供各种配件，以补充我们的探测器的完整产品线。
产品列表
InSb Detectors | ||||
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The photovoltaic Indium Antimonide detectors offered by InfraRed Associates, Inc.are p-n junctions formed by mesa techniques using single crystal material. This process yields the highest quality photodiodes which exhibit excellent electro-optical performance in the 1μm to 5.5μm wavelength region. These diodes are background limited (BLIP) detectors and their performance can be enhanced by spatial (cooled FOV stops) or spectral (cooled interference filters) reduction of the background. |  | |||
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The photovoltaic effect is the generation of a potential across the p-n junction when radiation of the proper wavelength is incident upon it. When the photon flux irradiates the junction, electron-hole pairs are formed if the photon energy exceeds the forbidden gap energy. | ||||
The field sweeps the electrons from the p region to the n region, and holes from the n region to the p region. This process makes the p region positive and the n region negative, and will produce current flow in an external circuit. An equivalent circuit of the InSb detector is represented below. This consists of both a signal and noise current generator in parallel with a resistive and capacitive term. | ||||
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When background radiation shifts the operation curve by generating a constant output in the active element, the detector should be reversed-biased to bring it back to the optimum operating point: zero voltage. This can be achieved by utilizing a matched preamplifier such as our IAP-1000IS.The detector preamplifier system operates in the detector noise limited mode. A dual output supply is required. | ||||
Standard Photovoltaic Indium Antimonide Detectors | ||||
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HgCdTe (MCT) Detectors | ||||
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InfraRed Associates, Inc.offers a complete line of photoconductive Mercury Cadmium Telluride (HgCdTe)LN2 and TE cooled detectors. The wavelength response can be varied by adjusting the alloy composition of this ternary compound. In addition, we can now provideRoom Temperature HgCdTe detectors. A bias voltage is required to operate these devices and an optimum value is determined to achieve the highest signal to noise ratio.InfraRed Associates, Inc.detectors are typically background noise limited in performance. The response for our standard LN2 cooledand TE cooled MCT detectors are depicted in the following graph. The value of D* and responsivity are given for a 60 degree FOV. | 
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Thermoelectric Cooled HgCdTe (MCT) | ||||
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 Infrared Associates, Inc. offers high qualityThermoelectrically Cooled Photoconductive HgCdTe (MCT)detectors. They offer high performance, with ease of operation.Standard detectors are optimized in the 2µm to 5µm wavelength.Extended range detectors operate in the wavelength region beyond 5µm.Optically Enhanced detectors are available with both reflective and refractive optical elements to improve the collection efficiency of these devices. The apparent enhanced responsivity and D*, of theses detectors, relies on the ability of the optical components to refocus energy, which might not normally be incident, on the detector element. These devices are most suitable for applications in which the energy incident is either collimated or diverging. The optically enhanced detectors are, therefore, ideally suited for applications in which fiber optics are employed. The detectors are mounted on two-stage, three-stage, or four-stage coolers in TO style packages as shown in the tables below. A calibrated thermistor is included in the package for accurate temperature monitoring and/or temperature control. Soldered windows and welded caps are used to hermetically seal the packages. The packages are backfilled with inert gas for more efficient cooler operation. They can be supplied with the following accessories: preamplifiers, power supplies, heat sinks and temperature controllers. Other wavelengths cutoffs are available on a limited basis,contact Infrared Associates, Inc.with your specific requirements. | ||||
Standard TE Cooled HgCdTe Detectors | ||||
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* Note: Heat Sink @ 30 Degrees Celsius | ||||
Extended Range TE Cooled HgCdTe Detectors | ||||
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* Note: Heat Sink @ 30 Degrees Celsius | ||||
Optically Enhanced TE Cooled HgCdTe Detectors | ||||
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* Note: Heat Sink @ 30 Degrees Celsius | ||||
TE COOLED STANDARD PACKAGING | ||||
TO-66
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TO-3
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LN2 Cooled HgCdTe Detectors | ||||
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Infrared Associates, Inc. offers high quality Liquid Nitrogen cooled HgCdTe detectors. Each detector is optimized for specified wavebands of; 2µm to 5µm, 2µm to 13µm or our FTIR Series with wavebands up to 2µm to 24µm, as shown in the tablebelow. The FTIR series of HgCdTe detectors are designed to achieve optimum performance in Fourier Transform Infrared spectrometers. The detectors offer the highest sensitivities with cutoffs ranging from 750 to 400 cm-1. A variety of dewar designs are available, all supplied with wedged windows to eliminate interference effects. In addition to the standard sizes listed in the following table, custom configurations are available on request. Custom packaging, both metal and glass, designed to interface with customer specified cooling systems, is also available. Accessories such as Preamplifiers, Valve Operators and Square Base Adapters are also available. Contact us to discuss your specific requirements.
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Standard Liquid Nitrogen cooled HgCdTe Detectors
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Room Temperature HgCdTe |
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Infrared Associates, Inc. can now provide Room Temperature HgCdTe detectors covering the wavelength range from 1µm to 6µm. These detectors offer both high sensitivity and ease of operation. They are offered in a range of packaging options. In addition, for those applications in which temperature drift is undesirable, resulting in changes in detector performance*, thermal stabilization can be accomplished by mounting the detector element on a single stage TE cooler. This will allow the detector to maintain a temperature of 20-25 degrees C over a wide range of ambient temperatures while ensuring stable detector performance. * For every degree increase in ambient temperature, there is a corresponding decrease of ~2% in D*peak! Contact us to discuss your specific requirements.
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Room Temperature HgCdTe Detectors  ROOM TEMPERATURE MCT STANDARD PACKAGING TO-8 |
InSb/HgCdTe 2-Color | |
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InfraRed Associates, Inc. offersInSb/HgCdTe 2-color infrared detectors for both commercial and military applications. These detectors are constructed to respond to different but adjacent regions of the infrared spectrum. One element has a short wavelength response and the other element responds to longer wavelength radiation. |  |
Our unique construction permits both elements to be at the same focal point. The InSb/HgCdTe two-color detector has an InSb element responding from 1µm to 5.5µm and the HgCdTe element to radiation from 5.5µm to 12.5µm. The HgCdTe element can be tailored to extend its long wavelength response to beyond 25mm. Custom configurations to customer specifications are available. Contact us to discuss your specific requirements. | |
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Standard InSb/HgCdTe 2-color infrared detectors | |
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Arrays | |
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InfraRed Associates, Inc. is a leading manufacturer of multi-element Photoconductive HgCdTe arrays. These custom designed multi-element arrays are available up to 128 elements in a linear or 2x format. Element separation as small as 12µm can be provided. Wavelength response with cutoff wavelengths(20%) from 4 µm to 16 µm can be manufactured. Custom packaging for TE Coolers, Closed Cycle Stirling Coolers or LN2 Dewars can be designed. Complete electronic systems from preamplifiers to turn-key operation can be custom interfaced to any selected array configuration. Contact InfraRed Associates, Inc. to discuss your specific requirements.
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Quadrant Arrays HgCdTe
Typical Applications: |
o Spectroscopy o Radiometry o Research o IR Microscopy |
The HgCdTe detectors can be fabricated inQuadrant Arrays for scanning, tracking and positioning systems. The quadrant arrays require a common lead between the four elements in either X or Y direction. This is normally wider than the minimum separation in order to handle the bias current of all four detectors. Typical specifications are given for the 2µm to 12.5µm region, however detectors are normally built as custom device arrays for the entire 1µm to 25µm range and can be fabricated with custom packages and using various cooling techniques.
InfraRed Associates, Inc. also has extensive experience in fabricating arrays from 2 to 128 elements. Multi-element arrays can be fabricated in a large variety of custom configurations including linear, staggered, offset, cross, etc. Elements as small as 25µm x 25µm with 12µm spacing can be provided with uniform radiometric characteristics. The arrays may vary in wavelength response from 1µm to 25µm and can be fabricated with custom electronics to minimize the output format.
Standard Quadrant Array Detectors are listed below. Contact us to discuss your specific requirements.
Standard HgCdTe Quadrant Array Detectors
Model Number | Active Area Element(mm2) | Wave-length Range (µm) | FOV=60O | Operating Temp. (K) | X or Y Separation (µm) | Common lead Width (µm) | Std. Pkg. | Std. Window |
D* (λp,1000,1) (cmHz1/2W-1) | ||||||||
MCT-Q-1 | 1 | 2-12.5 | > 2.0E10 | 77 | 25 | 50 | DMSL-8 | ARZn Se (2-14 µm) |
MCT-Q-2 | 2 | > 1.5E10 | 50 | 100 | ||||
MCT-Q-3 | 3 | > 1.0E10 | 50 | 100 |
Standard Packaging |
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LN2 Cooled MSL-8: Side Looking Metal Dewar--8 Hr. Hold Time MDL-8: Down Looking Metal Dewar--8 Hr. Hold Time MSL-12: Side Looking Metal Dewar--12 Hr. Hold Time MDL-12: Down Looking Metal Dewar--12 Hr. Hold Time MSL-24: Side Looking Metal Dewar--24 Hr. Hold Time MDL-24: Down Looking Metal Dewar--24 Hr. Hold Time
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TE COOLED STANDARD PACKAGING |
TO-66
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TO-3
ROOM TEMPERATURE MCT STANDARD PACKAGING TO-8 |
Stirling Cooled Detectors |
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InfraRed Associates, Inc. offers an additional cooling option for our Infrared Detectors. Stirling Cycle Cooled Detectors are offered in three different design packages allowing operation down to 75K, when required. This option eliminates the need for Liquid Nitrogen cooling and is ideal for remote or unattended operation.
K508 Integral Stirling Micro IDDCA K561 Integral Stirling Low Power Micro IDCA K549 Split Stirling Cryocooler
K508 Integral Stirling Micro IDDCA: The K508 Microcooler design model is solidly based on the concepts of direct detector mounting on the cooler's cold finger, and integral construction of cooler and dewar envelope. Operation of the integral Stirling microcooler, driven by a DC brushless motor, is clean, silent and highly reliable. Model K508 has been in service since 1994. This cooler is extensively used in many commercial instruments. The Micro IDCA model K508 contains an onboard temperature controller, which offers standby, remote shutdown and over-temperature /over-current protection options. By adopting various types of dewar envelopes, this microcooler can meet the cooling demands of most advanced IR detectors. 
K561 Integral Stirling Low Power Micro IDCA: This model was specially developed in order to meet hand-held thermal imagers applications requirements, where compactness, low input power and cooler lightweight are most important parameters. 
K549 Split Stirling Cryocooler: This cooler combines the famous reliability and rigidity of our microcooler family with the split configuration for compactness and better control of heat rejection and vibrations. Cold finger/dewar assembly identical and interchangeable with model K508. Built-in electronic module contains closed loop temperature controller and various options for motor stator configuration motor voltage and accessories.  |
Pre-Amplifiers | |
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MCT-1000 Pre-Amp for MCT(HgCdTe) Detectors The MCT-1000 was specifically designed to operate with Photoconductive Mercury Cadmium Telluride detectors. The low noise and high gain aspects coupled with a precision constant voltage bias provide an ideal complement toInfraRed Associates, Inc. HgCdTedetectors. The MCT-1000 preamplifier provides the MCT detector with all of the interface circuitry required for optimum operation. No external bias or load resistors are required. The MCT detector is connected to the input BNC connector with an SMA-BNC cable typically supplied with the detector. Positive and negative 15 Volt DC power supplies with at least 200mA(+15V) and 100mA(-15V) output are required. The detector bias is internally provided, and the bias voltage (or current) is adjustable from typically 0V to +2.5V. The electrical bandwidth is internally set to 1.5Hz to 150KHz. Other bandwidths are available.Contact us to discuss your specific requirements. Adjustable gain provides variable signal amplitude typically from 50 to 1000 times. The Bias voltage and gain are affected by the detector impedance, and as all detectors are slightly different in resistance, there will be a slight variation in maximum bias voltage and maximum gain. | INSB-1000 Pre-Amp for InSb Detectors The INSB-1000 was specifically designed to operate with Photovoltaic Indium Antimonide detectors. The low noise and high gain aspects, together with a zero volt bias, provide an ideal compliment to InfraRed Associates, Inc. InSb detectors. The INSB-1000 preamplifier provides the InSb detector with all of the interface circuitry required for optimum operation. No external bias or load resistors are required. The preamplifier is detector noise limited. The InSb detector is connected to the input BNC connector with an SMA-BNC cable typically supplied with the detector. Positive and Negative 15 Volt DC supplies with at least 100mA output are required. The electrical bandwidth is internally set to 1.5HZ to 150KHz. Other bandwidths (up to 5MHz) are available. Adjustable gain provides variable signal amplitude typically from 5 to 100 times. Special configurations for high speed and reverse biasing are available. Contact usto discuss your specific requirements |
