400-863-9100

InfraRed Associates(美国)

http://www.irassociates.com

地址:
2851 SE Monroe Street Stuart, FL 34997
电话:
(772) 223-6670
传真:
(772) 223-6671
产品:
光电探测器  放大器 

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 LNcooledand 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.blob.png

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

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TE COOLED STANDARD PACKAGING

TO-66

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Click on image for PDF version

 

TO-3

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Click on image for PDF version

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.blob.png

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.

 

Room Temperature HgCdTe   Detectors

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ROOM TEMPERATURE MCT STANDARD PACKAGING

TO-8

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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.

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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

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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
  DMSL-12
  OR
  DMDL-8
  DMDL-12

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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  LN2 Cooled PDF version

TE COOLED STANDARD PACKAGING

TO-66

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Click on image for PDF version

 

TO-3

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ROOM TEMPERATURE MCT STANDARD PACKAGING

TO-8

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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.

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K508   Integral Stirling Micro IDDCA

K561   Integral Stirling Low Power Micro IDCA

K549 Split   Stirling Cryocooler

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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.

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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.

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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.

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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

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