PhD candidate (M/F) to develop optical metasurfaces for optical detection of ultrasound
New
- FTC PhD student / Offer for thesis
- 36 months
- Doctorate
This offer is available in English version
This offer is open to people with a document recognizing their status as a disabled worker.
Offer at a glance
The Unit
Institut Fresnel
Contract Type
FTC PhD student / Offer for thesis
Working hHours
Full Time
Workplace
13397 MARSEILLE 13
Contract Duration
36 months
Date of Hire
02/11/2026
Remuneration
2300 € gross monthly
Apply Application Deadline : 06 August 2026 23:59
Job Description
Thesis Subject
Scientific Context and Challenges:
Optical resonators based on metasurfaces could offer innovative perspectives for photoacoustic imaging, particularly due to their ability to combine guided-mode resonance and very high quality factors. These properties make it possible to envision all-optical, high-resolution, and non-invasive photoacoustic imaging systems with potential biomedical applications.
The development of such sensors requires a detailed understanding of the coupling between acoustic and optical behaviors, as well as the influence of the localization of optical modes on the acoustic bandwidth of the device.
This thesis aims to model, optimize, and experimentally validate such an optical ultrasound sensor based on resonant metasurfaces. The work will focus on three main areas:
1. Multi-physics Modeling:
Development of numerical models to study acoustic and optical interactions in metasurfaces, using in-house codes and COMSOL Multiphysics software.
2. Geometry and Material Optimization:
Systematic exploration of structural parameters (periodicity, thickness, refractive indices) and material properties to maximize the ultrasonic sensitivity of the sensor.
3. Experimental Validation:
Comparison of the predicted simulation performance with experimental characterizations conducted in the laboratory on fabricated prototypes.
Your Work Environment
Work Context:
The thesis will take place within the Mosaic team at the Fresnel Institute (Marseille, France), a leading laboratory in optics and nanophotonics. The PhD student will benefit from:
- The expertise of the team's PhD students and postdoctoral researchers, who are already involved in the development of these sensors.
- Access to the laboratory's experimental characterization facilities.
- A collaborative and multidisciplinary environment at the interface of theory, modeling, and experimentation.
Compensation and benefits
Compensation
2300 € gross monthly
Annual leave and RTT
44 jours
Remote Working practice and compensation
Pratique et indemnisation du TT
Transport
Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€
About the offer
| Offer reference | UMR7249-THOCHA-011 |
|---|---|
| CN Section(s) / Research Area | Atoms and molecules, optics and lasers, hot plasmas |
About the CNRS
The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.
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