Bonn 2025 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 49: Poster – Photonics, Lasers, and Applications

Q 49.7: Poster

Mittwoch, 12. März 2025, 17:00–19:00, Tent

Optimized Fabry-Perot Resonators for strong coupling between excitons in Ruddlesden-Popper Perovskite to cavity photons — •Prabhdeep Singh¹, Maximilian Black¹, Sara Darbari², and Nahid Talebi¹ — ¹Institute of Experimental and Applied Physics, Kiel University, Kiel 24098, Germany — ²Nano-Sensors and Detectors Lab., Faculty of Electrical and Computer Engineering, Tarbiat Modares University, Tehran

Ruddlesden-Popper Perovskites (RPPs), due to their quasi-two dimensional layered structure and quantum confinement effects host excitons with typically high binding energies. In this study we model a Fabry-Perot resonator designed to study the coupling between excitons and cavity photons. The cavity features a multilayer structure of gold (and silicon nitride as reflective layers, enclosing a central chamber comprising an air gap and RPP as the active medium. Utilizing the transfer matrix method, we calculate reflection, transmission, and absorption spectra as functions of incident angle and photon energies. The results demonstrate strong coupling between the Fabry-Perot cavity resonances and the RPP excitons around the energy of 2.34 eV. Integrated reflection coefficient across incident angles (0-40°) used to simulate the microscope objectives, capture the angular dependence effects and features the energy split associated with the strong-coupling effect. The study demonstrates the importance of the resonator design for studying exciton-photon hybridization and its application in optoelectronic devices.

Keywords: 2D Ruddlesden-Popper Perovskite; transfer matrix method; Fabry-Perot resonator; strong coupling