Kseniia Lezhennikova will defend her thesis, entitled “Manipulation of Electromagnetic Near-field Interactions” on July 12, 2024 at 10:00 a.m. in the Pierre Cotton room of Institut Fresnel, campus St Jérome in Marseille. The presentation will be in English.
The jury is composed as follows :
– Julien de Rosny, Institut Langevin – Reviewer
– Matthieu Davy, University of Rennes – Reviewer
– Anne Sentenac, Aix Marseille University – Examinator
– Stanislav Glybovski, ITMO University – Examinator
– Boris Kuhlmey, University of Sydney – Examinator
– Frédérique Gadot, Université Paris Nanterre – President of the Jury
– Stefan Enoch, Aix Marseille University – Thesis Director
– Redha Abdeddaim, Aix Marseille University – Thesis Co-Director
Abstract : This thesis explores near-field interactions and control from optics to microwave and Terahertz (THz) ranges. It investigates how emitter emission and energy transfer depend on the surrounding environment. To do so we use an analogy between quantum emitters in optics like atoms and quantum dots and antennas in the microwave range, that can provide better spatial resolution and orientation control. Additionally, we examine the influence of metasurfaces and photonic crystals on near-field manipulation, showing their ability to control energy transfer. We demonstrate existing methods of the near field scanning on the example of hyperbolic metasurface. Then, we present a novel experimental setup in the THz range to explore photonic crystal near fields, revealing band gaps and self-colimation effects. This thesis encompasses theoretical foundations and experimental demonstrations, spanning from antenna-based energy transfer to innovative near-field measurements using photonic crystals. We conclude by outlining future research directions and the potential for manipulating the local photonic environment.
