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Portal > Offres > Offre UMR8023-YANTOD-013 - Post-doc (H/F) “Metamaterial-enhanced quantum infrared detectors”

Post-doc (H/F) “Metamaterial-enhanced quantum infrared detectors”

This offer is available in the following languages:
Français - Anglais

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General information

Reference : UMR8023-YANTOD-013
Workplace : PARIS 05
Date of publication : Tuesday, October 01, 2019
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 31 October 2019
Proportion of work : Full time
Remuneration : Between 2498 E and 3100 E net monthly according to experience
Desired level of education : PhD
Experience required : Indifferent

Missions

Le post-doc a pour mission de concevoir, fabriquer et caractériser des détecteurs quantiques infrarouges insérés dans des résonateurs à métamatériaux électromagnétiques. Ces résonateurs se comportent comme des circuits inducteurs-capacité à très haute fréquence, avec des parties capacitives fortement réduites (M. Jeannin, et al. ACS Photonics 6, 1207-1215 (2019)). Dans ce type de géométrie on attend un courant d'obscurité fortement réduit par rapport au photo-courant généré, et une température de fonctionnement accrue. Le but du post-doc est de valider ce concept. Dans un deuxième temps, sont objective sera d'étudier ces détecteurs en régime de couplage lumière-matière ultra-fort, ainsi que des détecteurs à photon unique de type CSIP (Charge Sensitive Infrared Photo-transistor).

Activities

-Design of meta-materials compatible with the injection / read-out of electric current in semiconductor devices.
-Clean-room fabrication of semiconductor quantum well based absorbing regions inserted into metamaterials
- Optical and electrical characterization of devices in cryogenic conditions. The optical characterizations consist of reflectivity measurements by FTIR spectroscopy. The electrical characterizations consist of measurements of photo-current spectra, responsivity measurements, and characterization of the noise of the detectors.

Skills

-Clean room fabrication: optical and electrical lithography, dry etching (ICP), all process needed for III-V semiconductor devices fabrication.
- Concepts on the characterization of detectors (photo-current measurements, responsivity, detectivity ...)

Work Context

The post-doc will be supported through the FETFLAG project “Qombs”, which will explore frequency combs obtained from quantum cascade lasers (QCLs) operating in the mid-infrared part (wavelengths between 4 microns and 10 microns) of the electromagnetic spectrum. The post-doc candidate will have the opportunity to work in a scientific environment of research excellence in the heart of Paris, with top class facilities. Furthermore, the FETFLAG consortium unites top scientific and industrial institutions in the field of MIR optoelectronics, will provide further career opportunities after the completion of the post-doc project.

Constraints and risks

Standard risks related to clean room fabrication

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