MCT Photodetectors
- Technology
- Infrared photodetectors
- Partner
- VIGO System
VIGO’s HgCdTe (MCT) photoconductive detectors are a three-stage thermoelectrically cooled IR photoconductor, based on sophisticated HgCdTe heterostructure for the best performance and stability. The device is optimised for maximum performance at 12µm. The detector element is monolithically integrated with hyper hemispherical GaAs microlens in order to improve the performance of the device. The photoconductive detector should operate in optimum bias voltage and current readout mode. Performance at low frequencies is reduced due to 1/f noise. 3° wedged zinc selenide anti-reflection coated (wZnSeAR) window prevents unwanted interference effects.
VIGO’s MCT detector can go up to 4TE and several windows and thermoelectric stages cooler are available.
Range features
A high level overview of what this range offers
- Optimal Wavelengths: 3µm to 14µm
- Packages: TO8, TO66, BNC, TO39, SMA
- Operating temperature: 300K or 195K
- Coolings: Uncooled to 4TE
- Time constants: Up to < 2ns
- Windows: None, ZnSe, Al2O3
- Sizes: 0.025 x 0.025mm² to 4 x 4mm²
- Types:PC, PV, PEM, Quadrant geometry
- Detectivity: Up to > 9 x 1011
What’s in this range?
All the variants in the range and a comparison of what they offer
| Type | Size (mm²) | Time constant (ns) | Cooling | Detectivity (cm.Hz1/2.W-1) |
|---|---|---|---|---|
PC (4 to 14µm) | 0.025 x 0.025 to 4 x 4 | < 2 | Up to 4TE | Up to > 6 x 1010 |
PV (3 to 10.6µm) | 0.025 x 0.025 to 0.1 x 0.1 | < 10 | Up to 4TE | Up to > 9 x 1011 |
PVM (8 to 10.6µm) | 0.1 x 0.1 to 4 x 4 | < 1.5 | Up to 4TE | Up to > 8 x 109 |
PEM (10.6µm) | 1 x 1 to 2 x 2 | < 1.2 | Uncooled | Up to > 1.6 x 108 |
Quadrant geometry(5 or 10.6µm) | 0.05 x 0.05 to 4 x 4 | < 1.5 | Uncooled | Up to > 2 x 109 |
