PC/PCI HgCdTe (MCT) Photoconductive Detectors

Product number: SW11680

Manufacturer: Vigo System

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Product information "PC/PCI HgCdTe (MCT) Photoconductive Detectors"

1-15 µm; Active Area 0.000625-16 mm²; Detectivity ≥9.0×10⁶- 4.0×10¹⁰ cm·Hz^1/2/W; Resistance ≤120-≤1,200 Ω; Package TO39, BNC, TO8, TO 66

Vigo System’s PC/PCI range of photoconductive detectors is based on the photoconductive effect. Infrared radiation generates charge carriers in the semiconductor active region decreasing its resistance. The resistance change is sensed as a current change by applying a constant voltage bias.

The PC/PCI series devices are characterized by near linear current-voltage characteristics. The electric field in photoconductors is constant across the device. These components are based on sophisticated HgCdTe heterostructures for the best performance and stability and optimized for the maximum performance at λopt.

Vigo System’s PC series features 1 µm to 12 μm HgCdTe uncooled, ambient temperature IR photoconductive detectors. The devices should operate in optimum bias voltage and current readout mode. Performance at low frequencies is reduced due to 1/f noise. The 1/f noise corner frequency increases with the cut-off wavelength.

PC series devices are also available thermoelectrically cooled by two-stage (PC-2TE series), three-stage (PC-3TE series) or even four-stage (PC-4TE series) TEC structures, resulting in 1 µm to 14 μm (PC-2TE), 1 µm to 15 μm (PC-3TE) or 1 µm to 16 µm (PC-3TE) HgCdTe photoconductive detectors. These series are protected by a 3° wedged sapphire (wAl2O3, PC-2TE) or zinc selenide anti-reflection coated (wZnSeAR) window, preventing unwanted interference effects.

The PCI series is optically immersed in order to further improve the parameters of the devices. This series’ cut-on wavelength is limited by GaAs transmittance (~0.9 μm).

Corresponding to the PC series, PCI series components are also available either as 1 µm to 12 μm HgCdTe uncooled, ambient temperature IR photoconductive detectors or as 1 µm to 15 µm (PCI-4TE: 16 µm) HgCdTe photoconductive detectors that are thermoelectrically cooled by two-stage (PCI-2TE series), three-stage (PCI-3TE series) or even four-stage (PCI-4TE series) TEC structures, again with a 3° wedged sapphire (wAl2O3, PC-2TE) or wedged zinc selenide anti-reflection coated (wZnSeAR) window, preventing unwanted interference effects.

For its range of PC/PCI HgCdTe (MCT) photoconductive detectors, Vigo System provides a broad range of selected line or configurable line infrared (IR) detection modules that integrate the IR photodetector with the preamplifier and – depending on the module series – also signal processing electronics, optics, heat dissipation systems and other components in a common package.

Key Features:

High Detectivity
Low Speed
High Stability and Reliability, Long Lifetime and MTBF
1/f Noise Corner Frequency fc: ≤10 kHz to ≤20 kHz
Active Element Material: Epitaxial HgCdTe Heterostructure
Optimal Wavelength λopt: 5.0 to 14.0 μm
With or Without Immersion Microlens Technology
Uncooled, Room Temperature Operation or Thermoelectrically Cooled (2-Stage, 3-Stage or 4-Stage)
Detectivity D*: ≥1.9x10⁷ to ≥4.0×10¹⁰ cm·Hz^1/2/W (λpeak, 20 kHz), ≥9.0×10⁶ to ≥2.0×10¹⁰ cm·Hz^1/2/W (λopt, 20 kHz)
Different Sizes of Active/Optical Area A(O): 25×25 µm² to 4×4 mm²
Current Responsivity-Active (Optical) Area Length Product Ri(λopt)·L(O): ≥0.001 to ≥3.0 A·mm/W
Time Constant τ: ≤2 ns to ≤20,000 ns
Bias Voltage Active Area Length Ration Vb/L: ≤0.15 V/mm to ≤24.5 V/mm
Resistance R: ≤120 to ≤1,200 Ω
Active Element Temperature Tdet: ~195 to ~230 K (TE-cooled Versions)
Different Acceptance Angles Φ: ~36° to ~124°
Different Packages: TO39, BNC, TO8, TO 66
Different Infrared Windows: None, wAl2O3, wZnSeAR
Wide Range of Dedicated Preamplifiers and Accessories Available

Applications: Industrial; Medical; Automotive; Environmental; Laser Power Control and Calibration; Gas Analysis; Mid-IR Spectroscopy; Gas Leak Detection; Air Quality Analysis; Water Quality Control; Engine Emission Monitoring and Control; Fuel Quality Assessment; Analysis of Temperature Distribution; Railway Transport Safety; Plastic Sorting; Security and Defense

Manufacturer "Vigo System"

Vigo System is a world-leading manufacturer of uncooled infrared (IR) photon detectors. Vigo System’s origins go back to a team of researchers at the Military University of Technology in Warsaw, Poland, that developed a special technique for manufacturing detectors operating without cryocooling. The company’s unique position on the market is confirmed by the status of an official supplier of subassemblies for NASA, resulting in Vigo System detectors being installed on the Curiosity rover exploring the surface of Mars. With its headquarters located near Warsaw, Poland, Vigo System provides a broad portfolio of photoconductive and photovoltaic IR detectors based on materials like HgCdTe (MCT) or InAs/InAsSb. Further detector product ranges offered by Vigo System are superlattice detectors or IR detector arrays. Beyond the detector components, various series of selected line or configurable line infrared (IR) detection modules are available, providing the infrared photodetector integrated with signal processing electronics, optics, heat dissipation systems and other components in a common package.

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1.6-10.5 µm; Active Area 0.01, 1 mm²; Responsivity 0.04-4.4 A/W; Detectivity 1.2x108-9.0×109 cm·Hz1/2/W; Resistance 28-5,000 Ω; Package TO39, TO8 Vigo System develops and produces a variety of MWIR and LWIR type II superlattice (T2SL) photoconductive (PC, PCAS series) and photovoltaic (PV, PVAS series) IR detectors, operating at room temperature or thermoelectrically cooled. These detectors achieve excellent parameters without cryogenic cooling (LN2). They do not contain mercury or cadmium and are complying with the RoHS Directive. The PCAS series of InAs/InAsSb type II superlattice photoconductive IR detectors contains 2-stage (PCAS-2TE series) or 3-stage (PCAS-3TE series) thermoelectrically (TE) cooled detectors with excellent parameters. Photoconductive detectors should operate in optimum bias voltage and current readout mode. Performance at low frequencies is reduced due to 1/f noise. A 3° wedged zinc selenide anti-reflection (AR) coated window (wZnSeAR) prevents unwanted interference effects. Some models additionally feature anti-reflection (AR) coating applied to the active element. For detection of CW radiation, the use of an optical chopper system is recommended. The PVAS series of InAs/InAsSb type II superlattice photovoltaic IR detectors contains uncooled or 2-stage (PVAS-2TE series) thermoelectrically (TE) cooled detectors with excellent parameters. The PVAS-2TE series features a 3° wedged sapphire window (wAl2O3) preventing unwanted interference effects. Key Features: Active Element Material: Epitaxial InAs or InAsSb Superlattice Hetereostructure Wide Spectral Range: 1.6 µm to 10.5 μm High Responsivity Excellent Linearity Cut-on Wavelength λcut-on (10%): 1.6 to ≤2.0 μm ±0.2 (±0.5) µm Peak Wavelength λpeak: 4.0 to 11.0 μm ±0.3 (±0.5) µm Cut-off Wavelength λcut-off (10%): 5.8 to 15.0 μm ±0.3 µm Detectivity D*: ~1.2x108 to ~9.0×109 cm·Hz1/2/W (λpeak) Current Responsivity Ri(λpeak): ~0.04 to ~4.4 A/W Time Constant τ: ~3 to ~17 ns Resistance R: ~28 Ω to ~5,000 Ω Environmentally Friendly, Complying With the RoHS Directive No Bias Required (PVAS Series) Bias Voltage Vb (PCAS Series): 0.5, 0.6 V Typ. No 1/f Noise (PVAS Series) 1/f Noise Corner Frequency fc (PCAS Series): 20 to 300 kHz Typ. Uncooled, Room Temperature Operation or 2-Stage / 3-Stage Thermoelectrically (TE) Cooled Versions Active Element Temperature Tdet: ~210 ,~230 K (TE-cooled Versions) Size of Active Area A: 0.1×0.1 mm², 1x1 mm² Acceptance Angle Φ: ~70°, ~90° Package: TO39, TO8 Infrared Windows: None, wZnSeAR, wAl2O3 Applications: Industrial; Medical; Automotive; Environmental; Laser Power Control and Calibration; Gas Analysis; Mid-IR Spectroscopy; Gas Leak Detection; Air Quality Analysis; Water Quality Control; Engine Emission Monitoring and Control; Fuel Quality Assessment; Analysis of Temperature Distribution; Railway Transport Safety; Plastic Sorting; Security and Defense

Product number: SW11682

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