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Portal > Offres > Offre UMR8023-YANTOD-014 - post-doc (H/F) "Infrared quantum detectors and lasers for MIR frequency combs"

post-doc (H/F) "Infrared quantum detectors and lasers

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Français - Anglais

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General information

Reference : UMR8023-YANTOD-014
Workplace : PARIS 05
Date of publication : Wednesday, October 02, 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


The mission of the post-doc fellow is to conceive, build and characterize quantum detectors with sensitivities approaching the single photon level, which will be used to probe the quantum properties of radiation produced by Quantum cascade lasers (QCLs). In particular, our goal is to explore frequency combs obtained from QCLs operating in the mid-infrared part of the electromagnetic spectrum (wavelengths between 4 and 10 microns).


The starting point for the project is the conception and realisation of quantum infrared detectors based on antenna micro-cavities (D. Palaferri, et al. Nature, 556 (2018)) and quantum cascade lasers. For detectors we will explore and optimizing various absorbing regions, such as quantum cascade detectors, and will achieve new functions, such as multi-spectral detection. For lasers we will focus on dispersion compensation for comb generation and single mode DFBs. Detectors and lasers will be characterized by advanced techniques, such as heterodyne detection, and pushed to its ultimate performance. The post-doc fellow student will actively participate in the conception and fabrication of the detectors, starting from 3D numerical modelling, through clean-room processing and optical characterization of the structures.


-Clean room fabrication: optical and electrical lithography, dry etching (ICP), all process needed for III-V semiconductor devices fabrication.
-Building of optical experiments
-Advanced knowledge in electronics (low noise measurements, stabilization loops…)

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 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

Additional Information

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