HgCdTe four-stage thermoelectrically cooled photoconductive infrared detectorsPC-4TE-10.6-1x1-TO8/TO66-wZnSeAR-70
PC-4TE-10.6-1x1-TO8-wZnSeAR-70 and PC-4TE-10.6-1x1-TO66-wZnSeAR-70 are four-stage thermoelectrically cooled (4TE) photoconductive IR detectors based on HgCdTe heterostructures for optimal performance and stability. Their specific wavelength (λspec) is 10.6 µm and their active area (A) is 1 mm × 1 mm. The detectors should operate in optimum bias voltage (Vb) and current readout mode. Performance at low frequencies is reduced due to 1/f noise. The detectors are available in TO8 and TO66 packages with a 3 deg. wedged zinc selenide anti-reflection coated window (wZnSeAR) to prevent unwanted interference effects.
Features
Spectral range: over 13.0 µm
Large active area
Front-side illuminated
Four-stage thermoelectrically cooled
No minimum order quantity required
Applications
Gas detection, monitoring and analysis: SO2, NH3, SF6
CBRN threats detection
CO2 laser measurements: power monitoring and control, beam profiling and positioning, calibration
Free-space optical communication
FTIR spectroscopy
Bacteria identification in medicine
Dentistry
Glucose sensing
Detector configuration
Detector symbol
|
PC-4TE-10.6-1x1-TO8-wZnSeAR-70 |
PC-4TE-10.6-1x1-TO66-wZnSeAR-70 |
Detector type
|
photoconductive |
|
Active element material | epitaxial HgCdTe heterostructure | |
Cooling | 4TE (Tchip ≅ 200 K) | |
Temperature sensor | thermistor | |
Active area, A | 1 mm × 1 mm | |
Optical immersion | no | |
Package | 4TE-TO8 | 4TE-TO66 |
Acceptance angle, Φ | ~70 deg. | |
Window | wZnSeAR (3 deg. wedged zinc selenide, anti-reflection coating) |
Specification
(Tamb = 293 K, Tchip = 200 K, Vb = 0.4 V)
Parameter | Value |
Unit | |||
Min. | Typ. | Max. | - | ||
Peak wavelength, λpeak | - | 8.5±0.6 | - | μm | |
Specific wavelength, λspec | - | 10.6 | - | μm | |
Cut-off wavelength, λcut-off (10%) | - | 10.3 | - | μm | |
Detectivity, D* (λpeak, 20 kHz) | - | 6.5×108 | - | cm⋅Hz1/2/W | |
Detectivity, D* (λspec, 20 kHz) | 3.5×108 | 4.0×108 | - | cm⋅Hz1/2/W | |
Current responsivity, Ri (λpeak) | - | 0.06 | - | A/W | |
Current responsivity, Ri (λspec) | 0.03 | 0.06 | - | A/W | |
Time constant, τ | - | 30 | - | ns | |
Resistance, R | - | - | 250 | Ω | |
Bias voltage, Vb | - | 0.4 | - | V | |
1/f corner frequency, fc | - | 20 | - | kHz |
Spectral response
(Typ., Tamb = 293 K, Tchip = 200 K)
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Application notes