Postdoctoral Fellowship – Optical Aerosol Metrology and Embedded Measurement Systems
Airborne soot and other nanoparticles, particularly those emitted during large-scale fires or industrial activities, pose major risks to human health and the environment. Yet, no mobile solution currently exists to provide detailed, on-site information on their concentration, size distribution, morphology, and nature. EMPEROR builds upon the successful FIREDRONE project, in which our team designed a miniaturized optical system based on cavity enhanced multi-wavelength extinction and scattering measurements. The next step is to integrate the evaluation of backscattering and light depolarization measurement within the optical cavity, enabling discrimination of particle types (mineral dust, bioaerosols, soot, etc.) and providing key input parameters for remote-sensing approaches such as LIDAR.
The postdoctoral researcher will play a central role in the scientific and technological development of this new measurement experimental setup. Responsibilities include:
• Designing and implementing the optical configuration for backscattering and depolarization detection, which is the main challenge from a fundamental point of view.
• Developing data analysis and inversion methods (multi-wavelength and multi-angle scattering models).
• Integrating the new modules into the existing compact cavity system (optics, electronics, control).
• Performing laboratory campaigns on well-controlled aerosols and if possible contributing to field tests (including comparisons with LIDAR data).
The project is highly interdisciplinary, combining experimental optics, aerosol physics, laser diagnostics, and instrument engineering. It will be supervised by Dr. Marek Mazur and Prof. Jérôme Yon within the “Aerosol Metrology” group at CORIA, internationally recognized for its expertise in optical diagnostics and soot characterization. The position will be part of a subgroup dedicated on the research on particle characterisation with optical cavity measurements and including one PhD student, one engineer and multiple interns working on the topic. This position offers the opportunity to contribute to a unique instrumentation project with strong perspectives for technology transfer, patenting, and real-world applications in fire safety, air quality, and environmental monitoring.
PhD in physics, optics, photonics, instrumentation engineering or related field
• Solid experience in experimental setups, optical instrumentation, or laser diagnostics
• Interest in aerosol science and environmental applications.
• Solid skills in post processing of experimental data (ideally using Python)
• Strong motivation to work in a collaborative, applied research environment bridging academic innovation and industrial/societal impact is essential.
• Proven capacity of scientific publication in peer reviewed journals and/or in international conferences
• Ability to work independently and collaboratively in a multidisciplinary team.
• Strong problem-solving skills and attention to detail.
• Good spoken and written command of English language, French is not required but an asset
The EMPEROR project offers a unique opportunity to work in an internationally renowned research laboratory on cutting-edge technology in the field of environmental monitoring, with a focus on practical solutions for fire response. You will be part of an innovative team that is pushing the boundaries of what is possible in terms of portable measurement systems. The role offers the chance to gain valuable experience in a multidisciplinary setting, working with advanced materials and technologies that have a real-world impact.
Please submit your CV, a cover letter outlining your relevant experience, and any supporting documentation to Marek Mazur (marek.mazur@coria.fr) and Jérôme Yon (jerome.yon@coria.fr) until the 8th january 2026