HgCdTe (MCT) Photoconductive Detector

Ambient temperature, with anti-fringing technology

PC-9-AF1×1-TO39-NW-90 is uncooled IR photoconductive detector based on sophisticated HgCdTe heterostructure for the best performance and stability.
In order to make this detector immune to unwanted optical fringing effects, VIGO developed anti-fringing technology (internal modification of substrate’s surface) and successfully applied it. This results in the fringing 10 – 40 times smaller compared to the standard IR detector.

Spectral response (Ta = 20°C)

Features

  • Anti-fringing technology applied
  • Significant fringing reduction for 2.2 - 8.2 µm spectral range
  • Large active area
  • Excellent linearity

Specification (Ta = 20°C)

Parameter
PC-9-AF1×1-TO39-NW-90
Active element material
epitaxial HgCdTe heterostructure
Cut-on wavelength λcut-on (10%) µm
2.2±0.1
Peak wavelength λpeak, µm
8.2±0.1
Cut-off wavelength λcut-off (10%) µm
10.6±0.2
Detectivity D*(λpeak 20 kHz), cm⋅Hz1/2/W
~1.4×107
Current responsivity Ripeak, 20 kHz), A/W
~0.0007
Time constant τ, ns
~2
Resistance R, Ω
~40
Bias voltage Vb, V
~0.4
1/f noise corner frequency fc, Hz
~20k
Active area A, mm×mm
AF1×1
Package
TO39
Acceptance angle, Φ
~90°
Window
none

Mechanical layout, mm

Dedicated preamplifier

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