HgCdTe (MCT) Photoconductive Detector

PCI-3TE-12-1 × 1-TO8-wZnSeAR-36 from VIGO System is a three-stage thermoelectrically cooled IR photoconductor based on the advanced HgCdTe heterostructure to ensure the best stability and performance.

The device has been improved to deliver optimum performance at 12 µm. In addition, the detector element is monolithically incorporated with hyper hemispherical GaAs microlens to enhance device performance.

Photoconductive detectors must work in optimum bias voltage and current readout mode. Low-frequency performance is decreased, thanks to 1/f noise and unnecessary interference effects are also prevented by the 3° wedged zinc selenide anti-reflection-coated (wZnSeAR) window.

Table 1. Source: VIGO System

Image Name Cooling Immersion Optimal wavelength
λopt, µm
Detectivity D*(λopt),
cm·Hz1/2/W
Package Time
constant
τ, ns
Datasheet
PCI-3TE-12-1×1-TO8-wZnSeAR-36 Three-stage TE cooled Yes 12.0 ≥9.0x108 TO8 ≤5

 

HgCdTe (MCT) Photoconductive Detectors

Photoconductive detectors rely on the photoconductive effect. Infrared radiation produces charge carriers in the semiconductor active region, thus reducing its resistance. By applying a continuous voltage bias, the resistance change is detected as a current change.

The devices are defined by near-linear current-voltage properties. Within the photoconductors, the electric field is constant across the device.

Table 2. Source: VIGO System

Image Name Cooling Immersion Optimal wavelength
λopt, µm
Detectivity D*(λopt),
cm·Hz1/2/W
Package Time
constant
τ, ns
Datasheet
PC-5 Uncooled No 5.0 ≥1.0x109 BNC,
TO39
≤5000
PC-6 Uncooled No 6.0 ≥3.0x108 BNC,
TO39
≤500
PC-9 Uncooled No 9.0 ≥2.0x107 BNC,
TO39
≤10
PC-10.6 Uncooled No 10.6 ≥9.0x106 BNC,
TO39
≤3
PC-2TE-5 Two-stage TE cooled No 5.0 ≥1.0x1010 TO8,
TO66
≤20000
PC-2TE-6 Two-stage TE cooled No 6.0 ≥3.0x109 TO8,
TO66
≤4000
PC-2TE-9 Two-stage TE cooled No 9.0 ≥4.5x108 TO8,
TO66
≤40
PC-2TE-10.6 Two-stage TE cooled No 10.6 ≥1.4x108 TO8,
TO66
≤10
PC-2TE-12 Two-stage TE cooled No 12.0 ≥4.5x107 TO8,
TO66
≤3
PC-2TE-13 Two-stage TE cooled No 13.0 ≥2.3x107 TO8,
TO66
≤2
PC-3TE-9 Three-stage TE cooled No 9.0 ≥1.0x109 TO8,
TO66
≤60
PC-3TE-10.6 Three-stage TE cooled No 10.6 ≥2.5x108 TO8,
TO66
≤20
PC-3TE-12 Three-stage TE cooled No 12.0 ≥9.0x107 TO8,
TO66
≤5
PC-3TE-13 Three-stage TE cooled No 13.0 ≥6.0x107 TO8,
TO66
≤4
PC-4TE-9 Four-stage TE cooled No 9.0 ≥2.0x109 TO8,
TO66
≤80
PC-4TE-10.6 Four-stage TE cooled No 10.6 ≥3.5x108 TO8,
TO66
≤30
PC-4TE-12 Four-stage TE cooled No 12.0 ≥2.0x108 TO8,
TO66
≤7
PC-4TE-13 Four-stage TE cooled No 13.0 ≥1.0x108 TO8,
TO66
≤6
PC-4TE-14 Four-stage TE cooled No 14.0 ≥6.0x107 TO8,
TO66
≤5
PCI-5 Uncooled Yes 5.0 ≥4.0x109 BNC,
TO39
≤5000
PCI-6 Uncooled Yes 6.0 ≥1.0x109 BNC,
TO39
≤500
PCI-9 Uncooled Yes 9.0 ≥1.0x108 BNC,
TO39
≤10
PCI-10.6 Uncooled Yes 10.6 ≥8.0x107 BNC,
TO39
≤3
PCI-2TE-5 Two-stage TE cooled Yes 5.0 ≥2.0x1010 TO8,
TO66
≤20000
PCI-2TE-6 Two-stage TE cooled Yes 6.0 ≥1.0x1010 TO8,
TO66
≤4000
PCI-2TE-9 Two-stage TE cooled Yes 9.0 ≥4.0x109 TO8,
TO66
≤40
PCI-2TE-10.6 Two-stage TE cooled Yes 10.6 ≥1.0x109 TO8,
TO66
≤10
PCI-2TE-12 Two-stage TE cooled Yes 12.0 ≥4.5x108 TO8,
TO66
≤3
PCI-2TE-13 Two-stage TE cooled Yes 13.0 ≥2.3x108 TO8,
TO66
≤2
PCI-3TE-9 Three-stage TE cooled Yes 9.0 ≥6.2x109 TO8,
TO66
≤60
PCI-3TE-10.6 Three-stage TE cooled Yes 10.6 ≥2.5x109 TO8,
TO66
≤20
PCI-3TE-12 Three-stage TE cooled Yes 12.0 ≥9.0x108 TO8,
TO66
≤5
PCI-3TE-13 Three-stage TE cooled Yes 13.0 ≥4.5x108 TO8,
TO66
≤4
PCI-4TE-9 Four-stage TE cooled Yes 9.0 ≥1.0x1010 TO8,
TO66
≤80
PCI-4TE-10.6 Four-stage TE cooled Yes 10.6 ≥3.0x109 TO8,
TO66
≤30
PCI-4TE-12 Four-stage TE cooled Yes 12.0 ≥2.0x109 TO8,
TO66
≤7
PCI-4TE-13 Four-stage TE cooled Yes 13.0 ≥1.0x109 TO8,
TO66
≤6
PCI-4TE-14 Four-stage TE cooled Yes 14.0 ≥3.0x108 TO8,
TO66
≤5

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