Research on the Optical Transmission Characteristics of Electromagnetically Induced Optical Lattices
The study of the optical transmission characteristics of electromagnetic-induced optical lattices involves periodic structures that possess unique physical properties due to the ordered arrangement of their basic units in the spatial dimension. These structures have significant research value in the fields of condensed matter physics, materials science, and biomedical engineering. Electromagnetic-induced optical lattices are novel periodic structures formed by applying periodic optical standing wave fields in atomic media. Based on the coherent control technology of the electromagnetic-induced transparency effect, by adjusting system parameters in real time, the refractive index of the atomic medium can be periodically modulated, breaking through the limitation of fixed band gaps in traditional photonic lattices, and providing a controllable experimental platform for the dynamic control of topological states and the development of new all-optical devices. Our laboratory has constructed and fabricated various different configurations of electromagnetic-induced optical lattices through multi-beam interference and spatial light modulation techniques. We have systematically studied the transmission characteristics of different types of optical fields such as Gaussian beams and vortex beams in them, developed optical field control technologies such as gain loss, phase modulation, and refractive index reshaping, achieved lossless transmission, efficient conversion, and real-time dynamic control of the target optical field, and designed and developed all-optical devices such as all-optical beam splitters and all-optical modulators. The current research contents include: (1) Preparation and study of new electromagnetic-induced optical lattices and their optical transmission characteristics; (2) Research on the non-Hermitian topological property control of electromagnetic-induced optical lattices; (3) Development of new all-optical devices based on electromagnetic-induced optical lattices.
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1) Creation and control of vortex-beam arrays in atomic vapor, Laser Photon. Rev. 17, 2200667 (2023).
2) Geometric pattern evolution of photonic graphene in coherent atomic medium, Opt. Express 31(7), 11335-11343 (2023).
3) Efficient all-optical modulator based on a periodic dielectric atomic lattice, Opt. Express 29(2), 2712-2719 (2021).
