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PhD on Infrared Quantum detectors and lasers for MIR frequency combs (H/F)

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Français - Anglais

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General information

Reference : UMR8023-ANGVAS-005
Workplace : PARIS 05
Date of publication : Friday, June 19, 2020
Scientific Responsible name : Carlo Sirtori
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 September 2020
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly

Description of the thesis topic

Our team is looking for a highly motivated student for a 3 year PhD project in the field of Semiconductor Quantum Optoelectronics. The student will be supported through an ANR project, which will explore frequency combs obtained from semiconductor lasers operating in the mid-infrared part (4µm < λ < 10µm) of the electromagnetic spectrum. The mission of the PhD student 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 the lasers. The PhD candidate will have the opportunity to work in a scientific environment of research excellence in the heart of Paris, with top class facilities and collaborations with top scientific and industrial institutions in the field of MIR optoelectronics.
The starting point for the project is the conception and realisation of quantum infrared detectors based on antenna micro-cavities [1] and quantum cascade lasers. For detectors we will explore and optimize 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 PhD 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.

[1]. D. Palaferri, et al. Nature, 556 (2018)

Work Context

The PhD will work in the quantum physics and devices group at the physics laboratory of Ecole Normale Supérieure.

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