Surprises in multiple scattering of light from disordered materials
Event details
| Date | 28.10.2016 |
| Speaker | Prof. Rémi Carminati, Institut Langevin, ESPCI Paris, Paris, France https://www.institut-langevin.espci.fr/remi_carminati |
| Location | |
| Category | Conferences - Seminars |
Light scattering and transport in disordered media has been extensively studied. On the fundamental side, the study of light fluctuations and correlations (speckles) reveals essential features in mesoscopic physics. On the applied side, methods and techniques have been developed for sensing and imaging in complex media. In this talk we will review recent results in coherent light scattering from complex materials in which unexpected behaviours show up. We will describe non-‐universal features in speckle patterns generated by disordered metallic films producing spatially localized plasmon modes [1,2], or by volume scattering in the Anderson localization regime [3]. In the context of diffusive transport through thick scattering media, we will show that a spatial correlation between the reflected and transmitted speckle patterns persists even for large optically thicknesses materials, a result that has implications for the control of wave transmission through complex media [4]. We will finally address the influence of correlations in the disorder on the photonic properties. We will show that dense and transparent materials can be designed, at densities for which a fully disordered material would be opaque due to multiple scattering [5]. These results bring new perspectives for the design of disordered materials with specific photonic properties, and for the control of light transport in complex media. [1] R. Carminati et al., Surf. Sci. Rep. 70, 1 (2015) [2] A. Cazé, R. Pierrat and R. Carminati, Phy. Rev. Lett. 110, 063903 (2013) [3] O. Leseur, R. Pierrat, J.J. Sáenz and R. Carminati, Phys. Rev. A 90, 053827 (2014) [4] N. Fayard, A. Cazé, R. Pierrat and R. Carminati, Phys. Rev. A 92, 033827 (2015) [5] O. Leseur, R. Pierrat and R. Carminati, Optica 3, 763 (2016)
Practical information
- Expert
- Free
Organizer
- Arnaud Magrez and Raphaël Butté
Contact
- Arnaud Magrez