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HgCdTe photoconductive infrared detector optimized for operation at 77 KPC-LN2-19-1x1-VFP-KR163-wZnSeAR-50
PC-LN2-19-1x1-VFP-KR163-wZnSeAR-50 is a photoconductive IR detector based on HgCdTe heterostructures for optimal performance and stability. This detector is optimized for operation at cryogenic temperatures, typically at 77 K (liquid nitrogen temperature). Its 10% cut-off wavelength (λcut-off) is 20.0 µm and its active area (A) is 1 mm × 1 mm. The detector should operate in optimum bias current (Ib) and voltage readout mode. Performance at low frequencies is reduced due to 1/f noise. The detector is mounted in a Kadel KR163-FSMA2 dewar with a 3 deg. wedged zinc-selenide anti-reflection-coated window. This detector is widely used in demanding applications requiring exceptional sensitivity and a wide spectral range.
Features
Spectral range: over 20.0 µm
Large active area
Front-side illuminated
Active element material optimized for operation at 77 K
Possible assembly of temperature sensor
Active area dimension 0.25 mm × 0.25 mm available (on request)
Other acceptance angle values available (on request)
Applications
FTIR spectroscopy
Detector configuration
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Detector symbol
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PC-LN2-19-1x1-VFP-KR163-wZnSeAR-50 |
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Detector type
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photoconductive |
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| Active element material | epitaxial HgCdTe heterostructure | |
| Cooling | LN2
(Tchip≅77K) |
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| Temperature sensor | no | |
| Active area, A | 1 mm × 1 mm | |
| Optical immersion | no | |
| Package | VFP-KR163 | |
| Acceptance angle, Φ | ~50 deg. | |
| Window | no | |
Specification
(Tamb = 293 K, Tchip = 77 K, Ib = 15 mA)
| Parameter | Value |
Unit | |||
| Min. | Typ. | Max. | - | ||
| Peak wavelength, λpeak | - | 16.0 | - | μm | |
| Cut-off wavelength, λcut-off (10%) | - | ≥20.0 | - | μm | |
| Detectivity, D* (λpeak, 20 kHz) | - | 1.0×1010 | - | cm⋅Hz1/2/W | |
| Voltage responsivity, Ri (λpeak) | - | 170 | - | V/W | |
| Resistance, R | - | 25 | - | Ω | |
| Bias current, Ib | - | 15 | - | mA | |
Spectral response
(Tamb = 293 K, Tchip = 77 K, Ib = 15 mA)
Access to file
Access to this file is limited. In order to download it, please provide all the information and submit the form.
Application notes
Temperature sensor characteristics
For more information, please contact us
