Thesis Offers

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In vivo studies of biomineralization by nonlinear coherent Raman optical microscopy
23-05-2022 - Thesis Offers

Description : The thesis will take place at the Fresnel Institute, on the Saint Jérôme campus. The student
will join
the Mosaic team, in collaboration with the Comix team, the IFREMER group in Montpellier and the
Monaco Scientific Center. During the thesis, the student will have to develop the experimental
coherent Raman microscopy experimental device adapted to the constraints of in vivo observation.
Live animals will be received in the laboratory and raised in the aquarium at the Institute. The
objective of the thesis is to develop the protocol allowing the in vivo imaging of the calcifying tissue
of the living animals, to conduct the first in vivo biomineralization experiments and to compare the
observations with the literature in order to propose an interpretation of the results.

Laboratory : Institut Fresnel, CNRS, Marseille

Thesis supervisor : Duboisset Julien (HDR)

Co-supervisor : Chamard Virginie (HDR)

Email : julien.duboisset@fresnel.fr virginie.chamard@fresnel.fr

Adress : Institut Fresnel, Domaine Universitaire de Saint Jérôme, 13397 Marseille, France

Tel : +33 413945482

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Realization and measurement of microwave analogues of protoplanetary dust to improve the understanding of planet formation
23-05-2022 - Thesis Offers

Contexte : This thesis will be carried out within the framework of the interdisciplinary project Dust2Planets whose goal is
to study the first steps of planetary formation, in particular the growth of dust in protoplanetary disks
(ERC Adv Grant, led by F. Ménard of IPAG). Through an innovative approach
innovative approach, the microwave measurement of optical properties of dust analogues, we will study
the signatures of dust growth in proto-planetary disks. Indeed, the exact processes of
processes are poorly known and any new direct information, in particular on the centimetric dust, will be fundamental.
centimeters, will be fundamental.

Financing : ERC Adv. Grant Dust2Planets

Thesis Director : Amélie Litman,

Co-supervisors : J-M Geffrin, François Ménard

Main place of activity : Institut Fresnel, Marseille

Contact : J-M Geffrin : jean-michel.geffrin@fresnel.fr

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Development and validation of 3D signal reconstruction algorithms for fluorescence tomography in the second biological window (SWIR)
28-04-2022 - Thesis Offers

Subjet : Thesis in the field of modeling and image processing for biomedical optical imaging. The mission is part of a collaborative project between the Institut Fresnel in Marseille, the Optimal platform of the Institute for the Advancement of Biosciences (IAB) in Grenoble, and the company Kaer Labs in Nantes, for the development of a fluorescence tomography system in the second biological window. The mission of the PhD student will be to develop 3D reconstruction algorithms for the localization of fluorescence sources.
The PhD project concerns the development of a reconstruction algorithm exploiting fluorescence images from a small animal fluorescence imaging system.

More details & Profile required : See attached document

Fundings : Thèse CIFRE avec KAER LABS

Duration : 36 mois

Contact :
 Anabela Da Silva - DR CNRS, research team DiMABio, Institut Fresnel / CERIMED - Tel : +33 4 13 94 54 79
 Company Manager : Pierre-Alix Dancer(CEO)

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Développement de filtres optiques interférentiels à faible absorption pour les lasers de puissance
11-04-2022 - Thesis Offers

Subject: Lasers of high continuous power have a very wide range of industrial, military and scientific applications,
military and scientific applications. Among the various optical components of a laser system, filters based on optical thin films are
Among the various optical components of a laser system, filters based on optical thin films are key elements to functionalize the surfaces (anti-reflection,
mirrors, dichroics). Despite absorption levels that can go down to the order of
part per million (ppm) in the layers, the heating induced under high laser power is a limitation for the
constitute a limitation for the laser performances, ranging from wavefront deformation to eventual damage of the
damage to the optics. In a context of increasing power of laser sources
sources, the objective of the thesis is the development of components allowing to limit the thermal effects, by
thermal effects, by optimizing manufacturing technologies (choice of materials and deposition parameters), by optimizing
(choice of materials and deposition parameters), by optimizing designs (minimization of electric fields), and by controlling the
local absorption of components (by creating a controlled absorption profile for example in order to
uniform spatial distribution of absorbed energy).

Funding: CIFRE

Duration: 36 months - start as soon as possible

Contact : Laurent Gallais, Catherine Grèzes-Besset, Julien Lumeau
Tel. : +33 6 20 98 69 46 / +33 4 42 36 97 08 / +33 6 72 28 90 71
e-mail : laurent.gallais@fresnel.fr / GREZES-BESSET@cilas.com / julien.lumeau@fresnel.fr

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New PhD positions for oct. 2022
07-03-2022 - Thesis Offers

Apply now & before March 28th 2022, for a PhD start in October 2022 !

The topics involve signal theory, image analysis and reconstruction, modelling in electromagnetism, experimental optics in advanced imaging with applications in biology and astronomy, characterization and detection methods, as well as optical components and nanophotonics.

To apply : please contact the PI in charge of the topics

Abdeddaim


 Quantitative phase microscopy of nanoparticules for biosensing applications
guillaume.baffou@fresnel.fr

Baffou


 Métamatériaux et Métasurfaces variant dans le temps.
redha.abdeddaim@fresnel.fr et stefan.enoch@fresnel.fr


Fossati


 Caractérisation d’anomalies dans des images hyperspectrales basée sur des réseaux de neurones multidimensionnels.
caroline.fossati@fresnel.fr

Khalighi


 Optimisation des performances et solutions de transmission pour la future génération des systèmes de communication satellitaire.
ali.khalighi@fresnel.fr and remi.andre@univ-amu.fr


Lemarchand


 Development of broadband and monochromatic optical monitoring strategies for sputtering and evaporation depositions
julien.lumeau@fresnel.fr and fabien.lemarchand@fresnel.fr


Lereu


 s-SNOM vibrational modes at high harmonics for sub-surface imaging in visible
aude.lereu@fresnel.fr

Duboisset


 Études in vivo de la biominéralisation par microscopie optique non-linéraire
julien.duboisset@fresnel.fr et virginie.chamard@fresnel.fr

Chaumet


 Profilométrie optique tridimensionnelle haute résolution
patrick.chaumet@fresnel.fr

Duboisset


 Étude de la structure de l’eau par optique non-linéraire
julien.duboisset@fresnel.fr

Wenger


 Nanopinces plasmoniques intégrées sur fibre optique pour manipuler des protéines individuelles / Fiber-integrated plasmonic nanotweezers to manipulate single proteins
jerome.wenger@fresnel.fr

Sabouroux


 Concept d’un capteur multi-antennes radiofréquence pour des applications de Sondage Micro-onde Tomographique sous Contraintes (SMTC)
pierre.sabouroux@fresnel.fr

Cassier


 Modeling of dispersive electromagnetic resonators from modal expansion
maxence.cassier@fresnel.fr and boris.gralak@fresnel.fr

Ilioupoulos


 Ultrafast nonlinear optical response and dynamics of 2D thin films
konstantinos.iliopoulos@fresnel.fr

Litman


 Inverse design for new functional electromagnetic devices with artificial intelligence schemes
amelie.litman@fresnel.fr


Apply now & before March 28, for a PhD start in October 2022 !

Auditions will be held in May 2022 at the Lab and then at the Doctoral School if your application is selected. The application file must include the following documents
 CV
 Letter of intent
 2 letters of recommendation
 copies of diplomas (with translation if necessary)
 transcripts of grades (with translation if necessary)

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Advanced numerical modeling of nonlinear photonic components
07-03-2022 - Thesis Offers

Title : Advanced numerical modeling of nonlinear photonic components

Place : Insitut Fresnel

Supervisors : Hervé Tortel (Professor), Anne-Laure Fehrembach (Assistant professor), Evgueni
Popov (Professor)

Funding : DGA/AMU (starting date september/october 2022)

Candidate profile : students interrested in the numerical modeling of physical phenomena

Application : CV and master gardes 15 april 2022

contacts : Hervé Tortel, Anne-Laure Fehrembach

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Improving the lifetime of optics for high power lasers in space
07-03-2022 - Thesis Offers

Title : Improving the lifetime of optics for high power lasers in space

Location : Institut Fresnel, Marseille, France.

Requirements : MASTER in material science / physical chemistry / physics; knowledge of
surface analyzing techniques is recommended, knowledge in optical instrumentation (lasers)
appreciated.

Postulation deadline: March 31st 2022
Feedback date: mid-June (or before)
Starting date: October 1st 2022

Thesis Advisors : Franck WARGNER and Jean-Yves NATOLI

Responsible person at the French space agency (CNES):
Delphine FAYE
DCT/AQ/LE

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Non-diffractive Bessel beams for near-field wireless RF link: modelization, synthesis, dynamic control and self-healing
26-08-2021 - Thesis Offers

Qualifications: the candidate must have a master degree in Physics or Photonics, with a strong background in electromagnetism and optics. Programing skills in matlab are expected, and prepare to deal with programs in Fortran. Radio-frequency engineering and antenna knowledge are welcome.

Laboratory : Institut Fresnel, UMR-CNRS 7249, CONCEPT team

Context : ANR LinkALL project (IETR/Institut Fresnel /Thales Resesarch and Technology)

Period: 3 years doctoral contract starting the last trimester of 2021-

PhD supervisors : G. Soriano, C. Amra, M. Zerrad

PhD supervisors: G. Soriano, C. Amra, M. Zerrad

Application : Send Resume and transcript of records to myriam.zerrad@fresnel.fr

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Advanced numerical modeling of nonlinear photonic components
15-03-2021 - Thesis Offers

Thesis Director : Hervé Tortel, Anne Laure Fehrembach

Place : Institut Fresnel

Fundings : DGA / AMU

European citizen only

Analysis of light scattered by localized defects and contamination
04-03-2021 - Thesis Offers

Thesis Director : Myriam Zerrad, myriam.zerrad@fresnel.fr

Place : Équipe Concept - Institut Fresnel

Fundings : CNES

Send CV and Letter to myriam.zerrad@fresnel.fr before March 10, 2021

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RF cloaking for desensitisation of close and/or co-located antennas Application in the smallsats context
15-04-2020 - Thesis Offers

Subject description :
The development of projects using small platforms (smallsat or nanosat), whether for constellations (Oneweb, Kinéis, ...) or short duration missions (Entrysat, MarCO, ...), leads space actors to a race for miniaturization, and to the reduction of costs, platform equipment and payload instruments. From a radiofrequency point of view, this is not without consequences on the performance of the various telecommunication links. Indeed, this advanced miniaturisation has two complementary adverse effects :
 A decrease in available on-board power. This reduces margins and therefore requires antennas to be particularly efficient once they are on board the satellite.
 A significant reduction in the available surface area on the sides, which means that the radiating elements take up less space and are closer to each other.
This proximity can lead to a total or partial destruction of antenna performance (mismatch, pattern distortion, degradation of polarization purity, losses ...) that must be studied and compensated for. In this respect, there are in the literature some examples of strategies to solve these problems. It has been shown in [1] that the pattern of a monopole antenna disturbed by the presence of another monopoly placed nearby could be reconstructed by adding a "cloak of invisibility" around the disturbing antenna in order to make it invisible. This promising cloaking technique [1-3] can be used in a spatial context where, on small platforms, antenna co-location is strong.

Thesis advisor : Stefan ENOCH, Institut Fresnel (Aix-Marseille Université, CNRS, Centrale Marseille)
Co-advisor : Nicolas MALLEJAC, CEA DAM Centre du Ripault
CNES supervisor : LAQUERBE Vincent, Service Antennes (DSO/RF/AN)

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Ultra-sensitive stimulated Raman Microscopy
02-04-2019 - Thesis Offers

Summary :
The aim of this project is to develop an ultra-sensitive background free microscopy scheme for vibrational imaging by means of stimulated Raman scattering (SRS) with application in chemistry, pharmacology and biomedical imaging.

Supervisor:
Hervé RIGNEAULT

Team :
MOSAIC

More details can be found at:
imabio-cnrs.fr

Start date : April 2019

End date: December 2019

Polarized Enhanced Coherent Raman Scattering
02-04-2019 - Thesis Offers

Summary :
The aim of this project is to exploit light polarization in nonlinear microscopy to optimize the matching efficiency between optical fields and molecular responses. It will bring novel solutions to background-free nonlinear imaging with enhanced sensitivity.

Supervisor :
Sophie BRASSELET

Team :
MOSAIC

2 available PhD positions (starting 2019) in the mosaic team in the frame of the MUSIQ H2020 EU ITN project : www.musiq-etn.eu

Start date : April 2019
End date: December 2019

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Optical imaging deep in scattering media
21-03-2019 - Thesis Offers

Resume :
Adaptive optics, optimizes a wavefront using nonlinear generated signal as a feedback. In this project, we want to develop an adaptive optics approach to non-linear microsscopy.

Team :
MOSAIC

Supervisors:
Sophie BRASSELET
Dmitry NUZHDIN

Start date of the offer : 1st April 2019
End date of the offer : 30th september 2019

Optical transport properties of a mouse spinal cords
21-03-2019 - Thesis Offers

Resume :
The goal of this project is to reproduce the techniqe in the lab of MOSAIC group, creating a new setup for in situ routine study of mouse spinal cord scattering properties.

Team :
MOSAIC

Supervisors:
Sophie BRASSELET
Dmitry NUZHDIN

Start date of the offer : 1st April 2019
End date of the offer : 30th september 2019

Biological tissue modeling for non-linear microscopy applications
21-03-2019 - Thesis Offers

Resume :
We model light propagation in biological tissue using finite-difference time domain method to understand the intrisic properties of the model system (i.e. mouse spinal cord) and to be able to simulate it without need for an actual experiment.

Team :
MOSAIC

Supervisors:
Sophie BRASSELET
Dmitry NUZHDIN

Start date of the offer : 1st April 2019
End date of the offer : 30th september 2019

Inner structure imaging of small solar bodies
18-01-2019 - Thesis Offers

Abstract :
This Phd thesis aims to develop new approaches for imaging large structures, with an application to small bodies of the solar system.

Team :
HIPE

Supervisor :
Christelle EYRAUD

Development of broadband and monochromatic optical monitoring strategies for magnetron sputtering depositions
02-10-2018 - Thesis Offers

Abstract :

In this thesis, we propose to explore the combination of both monochromatic and broadband optical monitoring techniques. These developments will be done in collaboration between the Thin Film Research Team at institut Fresnel in Marseille and Bühler company.

Supervisors : Dr Thomas Begou and Julien Lumeau at Institut Fresnel
Dr Harro Hagedorn and Detlev Arhilger at Bühler Alzenau

Apply at : Julien LUMEAU

Team : RCMO

Understanding the nanoscale correlation between morpho-chemical, mechanical and optical properties of plant cell walls toward biofuel applications
04-09-2018 - Thesis Offers

Abstract :

The aim here is to investigate the morphological, chemical, mechanical and optical properties of wood sheets constraint to abiotic stresses directly acting on the tree/branch growth.

Superviseurs : Anne CHARRIER and Aude LEREU

Team : CONCEPT and CINAM

Engineering light scattering in optical interference coatings
04-09-2018 - Thesis Offers

supervisors : Myriam ZERRAD
Michel LEQUIME
Claude AMRA