HgCdTe (MCT) Photoconductive Detector

1.0 – 12.0 µm, ambient temperature, quadrant

PCQ-10.6 is uncooled IR photoconductive quadrant detector based on sophisticated HgCdTe heterostructures for the best performance and stability. Quadrant detector consists of four separate active elements arranged in a quadrant geometry. The device is optimized for the maximum performance at 10.6 µm. The detector should operate in optimum bias voltage and current readout mode. Performance at low frequencies is reduced due to 1/f noise. The main application of PCQ detectors is laser beam profiling and positioning.

Spectral response (Ta = 20°C)

Features

  • High performance in the 1.0 - 12.0 µm spectral range
  • Ambient temperature operation
  • Long lifetime and MTBF
  • Stability and reliability
  • 1/f noise

Specification (Ta = 20°C)

Parameter
PCQ-10.6
Active element material
epitaxial HgCdTe heterostructure
Optimum wavelength λopt, µm
10.6
Detectivity D*(λpeak, 20 kHz), cm⋅Hz1/2/W
≥1.9×107
Detectivity D*(λopt, 20 kHz), cm⋅Hz1/2/W
≥9.0×106
Current responsivity Riopt), A/W
≥0.001
Time constant τ, ns
≤5
1/f noise corner frequency fc, Hz
≤20k
Bias voltage Vb, V
≤6.0
Resistance R, Ω
≤240
Active area of single element A, mm×mm
1×1
Distance between elements, μm
50
Package
TO8
Acceptance angle, Φ
~70°
Window
none

Mechanical layout, mm

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