PATCH-ANTENNA FOR ENHANCED QWIP (QUANTUM WELL INFRARED PHOTODETECTOR) PERFORMANCES

PATCH-ANTENNA FOR ENHANCED QWIP (QUANTUM WELL INFRARED PHOTODETECTOR) PERFORMANCES

 

The technology developed by the laboratory aims to provide infrared detectors in double-metal patch geometry. In this type of geometry, the absorbing zone is inserted between two metal layers, which form a microcavity that can also act as an antenna for infrared radiation. This geometry allows an increased responsiveness and a significant reduction of the detector’s dark current. In addition, the technology has a very high operating temperature limit compared to competing solutions, ease of production and high spatial uniformity.

 

Applications

  • High sensitive Infrared sensors (defense, space, …)
  • Infrared Imaging (defense, security, maintenance, process control, medical…)
  • Terahertz imaging

 

Competitive advantages

  • Operation at room temperature and limited temperature of 86 K
  • Ease of production and uniformity
  • Pixel size reduction up to 1µm2
  • Improved detection: detection possible at normal incidence with low dependence on angle of incidence
  • Better sensitivity: Noise Equivalent Temperature Difference (NETD) < 1mK
  • A thin active area (<252 nm)

 

Intellectual property

Priority number : EP20140305016 20140107

 

Keywords

Infrared detection - Dark current - Temperature BLIP Cryogenic temperature operation - Semiconductor detectors

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