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Reference : UPR10-MICPEF-015
Workplace : VALBONNE
Date of publication : Monday, November 18, 2019
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 January 2020
Proportion of work : Full time
Remuneration : € 2,555 gross monthly
Desired level of education : 5-year university degree
Experience required : 1 to 4 years
Develop an imaging device based on efficient metasurfaces operating in reflection for wavelengths of the visible spectrum. This imaging device can also influence the polarization states of the reflected light, thus providing insightful polarimetric information of objects and the observation scene. The candidate will leverage on skills acquired during the PhD. He/she will be closely working in collaboration with members of the ERC FLATLIGHT project at CRHEA.
The candidate will perform modeling of the device using numerical studies, in particular considering the reflection properties of metallic and/or dielectric
nanostructures. He/she will then develop the design of the reflective metasurface system and participate in the experimental realization and characterization of a demonstrator. The latter will be studied and implemented in a portable imaging device, in collaboration with a world leading company.
Metasurfaces, numerical modeling, nanotechnologies. Development of new optical devices for wavefront control.
The Research Center for Heteroepitaxy and its Applications (CRHEA) is a CNRS research laboratory specialized in the epitaxy of large bandgap semiconductor materials such as III nitride materials (GaN, AlN) , zinc oxide (ZnO), silicon carbide (SiC) and their micro- and nanofabrication in a clean room. CRHEA also studies 2D materials such as graphene, or boron nitride.
The main areas covered by the CRHEA concern the energy transition, the communications of the future, the environment and health. CRHEA also conducts fundamental studies in nanoscience and crystal growth.
High energy bandgap materials are key elements for power electronics, ultra-high frequency electronics, LED-based lighting and new generations of micro-displays. CRHEA visible and ultraviolet light sources have multiple applications for lighting, biophotonics and water purification. CRHEA also develops components in the THz domain, photonic circuits, advanced optical components based on metasurfaces, spintronic applications, sensors and is involved in the development of quantum technologies.
The laboratory has eight molecular beam epitaxy growth reactors and six vapor phase growth reactors. It also has tools for structural characterization of materials and a clean room for micro and nanofabrication.
Context of the integration team:
The combination of top-down and bottom-up approaches makes it possible to exploit all the possibilities offered by nanostructures and this is the strength of the Nanotechnologies team, which uses GaN and ZnO as materials of choice. Our interests range from basic materials science, including MBE and MOCVD growth to new materials (eg ZnMnO, rare earth nitrides and oxynitrides), to the development of more complex nanophotonic systems. These include metasurfaces, which allow the manufacture of ultrathin-ultralight optoelectronic components such as metal lenses, optical microcavities. These are the ideal playground for testing effects in quantum electrodynamics and obtaining Bose-Einstein condensates in a semiconductor environment. Finally, a nanophotonic platform based on GaN nanowires is able to stimulate biological cells with unprecedented spatial resolution. Moreover, the manipulation of the spin of carriers and / or excitons within these photonic structures, thanks to our magnetic materials, opens the possibility of coupling spin and photons in an electrically addressable interface.
Constraints and risks
Risks related to radiation
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