HgCdTe (MCT) Photoconductive Detector

1.0 – 9.3 µm, ambient temperature

PC-9 is uncooled IR photoconductive detector based on sophisticated HgCdTe heterostructure for the best performance and stability. The device is optimized for the maximum performance at λopt = 9.0 μm. The device should operate in optimum bias voltage and current readout mode. Performance at low frequencies is reduced due to 1/f noise.

Spectral response (Ta = 20°C)

Features

  • High performance in the 1.0 - 9.3 µm spectral range
  • Ambient temperature operation
  • Active area from 50×50 µm^2 to 4×4 mm^2
  • Long lifetime and MTBF
  • Stability and reliability
  • 1/f noise

Specification (Ta = 20°C)

Parameter
PC-9
Active element material
epitaxial HgCdTe heterostructure
Optimum wavelength λopt, µm
9.0
Detectivity D*(λpeak, 20 kHz), cm⋅Hz1/2/W
≥1.0×108
Detectivity D*(λopt, 20 kHz), cm⋅Hz1/2/W
≥2.0×108
Current responsivity-active area length product Riopt)·L, A·mm/W
≥0.003
Time constant τ, ns
≤10
1/f noise corner frequency fc, Hz
≤10k
Bias voltage-active area length ratio Vb/L, V/mm
≤3.6
Resistance R, Ω
≤300
Active area A, mm×mm
0.05×0.05, 0.1×0.1, 0.25×0.25, 0.5×0.5, 2×2, 3×3
Package
TO39 BNC
Acceptance angle, Φ
~90° ~102° *)

~124° **)

Window
none

*)  Aperture C = Ø4 mm.

**)  Aperture C = Ø6 mm.

Mechanical layout, mm

Dedicated preamplifier

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