At ESPCI PSL, the Institut Langevin and LPEM are seeking a motivated intern and PhD candidate to join an exciting ANR-funded collaborative project investigating photon thermalization in disordered scattering media.
The spectrum of the light emitted by a black body in thermal equilibrium at temperature T, such as the Sun or a light bulb, is determined by the temperature alone, as stated by Planck’s and Wien’s law. At Institut Langevin we have recently experimentally demonstrated that a different behavior can be observed for photons emitted by laser-pumped Rhodamine fluorescent molecules in a scattering medium. The next step after this first proof of principle is to design the disordered scattering medium and the properties of the fluorophores to optimize the occurrence of photon thermalization.
In the frame of the internship, the student will work at both LPEM to synthesize inorganic nanomaterials as scatterers or emitters with well controlled optical properties and at Institut Langevin to characterize the ability of the samples to generate thermalized light.
During the PhD thesis that will follow the internship, we will use the knowledge developed in nanoparticles synthesis and thermalization to develop innovative scattering materials with optimized disorder correlations with the final goal to reach Bose-Einstein condensation of photons in these samples.
PhD offer : New thermalized light sources based on fluorescent scattering media
