Presentation Information
[9a-PA3-4]Theoretical Analysis of Light-Matter Interaction Based on the Spatial Matching of Optical Fields and Exciton Wavefunctions in Cylindrical Structures
〇Koki Hayashi1, Takuya Matsuda1,2, Masaya Nagai1, Norihiko Sekine3, Hajime Ishihara4, Masaaki Ashida1 (1.UOsaka, 2.OMU, 3.NICT, 4.Ritsu. Univ.)
Keywords:
exciton wavefunction,breakdown of the long wavelength approximation,semiconductor cylindrical structure
Enhancing light-matter interactions is key to reducing the driving energy of optical devices. While conventional approaches have mainly focused on designing photonic environments, this study theoretically explores semiconductor structures that enhance the interaction by considering the spatial structure of both the exciton wavefunction and light. Through self-sustaining mode analysis of a GaAs cylindrical structure using nonlocal response theory, we found that the energy shift as well as radiative width reaches up to several tens of meV at a radius of approximately 430 nm. This result suggests the interaction strength that surpasses that of GaAs thin films. In the presentation, we will discuss the detailed origin of this enhancement.