Transfert de technologie

Applications

BRASIL test bench, dedicated to the measurement of the angular response of infrared detectors.  

> Defense, Security,
   Teledetection, Spatial

• Expertise of infrared focal plane arrays from different technologies.
• Design of infrared instrumentation based on infrared sensors at the leading edge of technology.

Keywords

• Infrared sensor, Focal plane array, Infrared instrumentation, Electro-optical measurement, Radiometric performance, Airborne camera, Radiometer, Spectrometer.

Advantages

• Unique gathering of competencies in electronics, cryogenics, optics and semi-conductor physics.
• Possibility to design, realise and use original test benches to measure the ultimate performances of infrared sensors:
  • Operating temperature of the infrared focal plane array as low as 10K
  • Measurements of currents as low as 10 aA (10^-17 amps)
  • Measurements under ultra-low incident power
• Development of elaborate models involving semi-conductor physics and quantum physics to interpret the measurements.
• Privileged contacts with detector manufacturers leading to the realisation of next- generation focal plane arrays with built-in advanced electro-optical functions.

Testing

• Electro-optical characterisation of infrared focal plane arrays and single detectors, including the measurement of:
  • Dark current
  • Responsivity (quantum efficiency, linearity)
  • Noise (fixed pattern noise, temporal noise)
  • Angular response
  • Spatial and spectral responses

Expertise

• Evaluation of the radiometric performances of infrared focal plane arrays -> considered as the French MoD’s reference laboratory for the electro-optical
• Characterization of IR sensors

 

Image delivered by a focal plane array in response to a uniform
and quasi-monochromatic illumination. The fringes are representative
of a thickness defect in the detector structure.

Infrared sensor and cryocooler specifically developed
by SOFRADIR for the MISTERE spectro-radiometer.

General overview of the MISTERE spectro-radiometer.