PhD Position in Ultrafast Nonlinear Optical Response and Dynamics of 2D Thin Films Aix-Marseille Université in France

This PhD position at Aix-Marseille Université focuses on the ultrafast nonlinear optical response and dynamics of two-dimensional (2D) thin films, with research conducted at the renowned Institut Fresnel in Marseille, France. The project aims to unravel the origins of nonlinear optical properties in 2D topological insulators such as Sb2Te3, Bi2Te3, and Bi2Se3, which are known for their exceptional optical nonlinearities and potential in advanced laser systems.

The successful candidate will engage in a comprehensive research program encompassing thin film deposition using electron beam techniques, precision annealing with high-repetition-rate femtosecond lasers, and advanced characterization methods including X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM). A key part of the project involves nonlinear optical studies using the Z-scan technique and a state-of-the-art femtosecond laser system, enabling exploration of the effects of wavelength, repetition rate, and pulse duration on the films' nonlinear responses.

Additionally, the PhD student will design and implement a pump-probe optical spectroscopy setup to investigate ultrafast carrier dynamics in these materials, providing insights into photon/electron interactions and the fundamental mechanisms behind nonlinear refraction and absorption. The research environment offers access to modern facilities and a collaborative team with expertise in optics and materials science.

Applicants should have a master's degree and a strong background in optics or nonlinear optics. Experience with thin film technologies, laser systems, or optical spectroscopy is beneficial. The position is full-time, with a duration of 36 months, and is based at the Institut Fresnel Lab in Marseille. Application materials include a CV, academic grades, and a motivation letter, to be submitted to Dr. Konstantinos Iliopoulos. The application deadline is March 31, 2026.

This opportunity is ideal for candidates seeking to advance their expertise in ultrafast optics, nonlinear phenomena, and 2D materials within a leading European research institution.