Type II Superlattice Photoconductive Detector

1.6 – 12.0 µm, two-stage thermoelectrically cooled

PCAS-2TE-11-0.1×0.1-TO8-wZnSeAR-70 is a Type II superlattice two-stage thermoelectrically cooled IR photoconductor, with excellent parameters. 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 window (wZnSeAR) prevents unwanted interference effects. For detection of CW radiation, using of optical chopper system is recommended. This detector does not contain mercury or cadmium and is compliant with the RoHS Directive.

Spectral response (Ta = 20°C)

Features

  • High performance in spectral range from 1.6 to 12.0 µm
  • Excellent linearity
  • Environmentally friendly

Specification (Ta = 20°C)

Parameter
PCAS-2TE-11-0.1×0.1-TO8-wZnSeAR-70
Active element material
epitaxial superlattice heterostructure
Cut-on wavelength λcut-on (10%) µm
1.6±0.2
Peak wavelength λpeak, µm
6.0±0.3
Cut-off wavelength λcut-off (10%) µm
12.0±0.3
Detectivity D*(λpeak, 100 kHz), cm⋅Hz1/2/W
~1.9×108
Current responsivity Ripeak), A/W
~1.5
Time constant τ, ns
~7
Resistance R, Ω
~55
Bias voltage Vb, V
typ. 0.5
1/f noise corner frequency fc, Hz
typ. 100k
Active element temperature Tdet, K
~230
Active area A, mm×mm
0.1×0.1
Package
TO8
Acceptance angle, Φ
~70°
Window
wZnSeAR

Mechanical layout, mm

Dedicated preamplifiers

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