Capteur pour la gamme de longueurs d’onde IR

Context evolution

 E-ELT decided in 2014 and started, as well as equivalent other ELT
 ARIEL one of the three missions selected for a phase A study by ESA in the framework of the M4 mission of the cosmic vision 2015-2015 programme
 calls for tenders foressen to provide near IR arrays for ELT instruments
=> first generation E-ELT instruments require 
3 times more pixels than the whole VLT instrumentation.

FOCUS progresses

On line with FOCUS proposal : developments along three axes :
 HgCdTe large format near IR arrays
 HgCdTe electron Avalanche Photo-Diodes IR arrays (APD)
 HgCdTe mid-IR arrays

European HgCdTe near IR array : within reach

 Developping a strong partnership between industrial and academic partners to produce IR detectors with the best required performance for astrophysics
 ESA calls for developing IR arrays
 FOCUS (+ SOFRADIR) selected for Phase 1 and then 2

Improving performances close to specifications (dark current, read out noise)

Very low flux test bench for scientific qualification
O. Boulade et al. 2014

Last phase ESA call expected soon > increase format to 2k*2k
Preparation with SOFRADIR initiated by FOCUS
 1 dedicated FOCUS-SOFRADIR workshop
 plus 1 additional strategic meeting

Near IR Avalanche PhotoDiodes : European lead

 new technology HgCdTe sensors with promising high performances

 to develop very fast IR detector which can be read at 1000 Hz - Applications : Adaptive Optics, interferometry, planetary space missions
 Started before FOCUS : program RAPID

Key contributions of FOCUS
 link with astrophysicists 
 > installation in the PIONIER instrument VLTI at Paranal

  • Fainter objects detection (x 2 or 1.5 magnitude)
  • Faster operation (x 2) for degraded weather conditions.
     Funding technical batches to improve performances

Mis à jour le 1er mars 2023