Advanced Photonics Nexus, Volume. 3, Issue 2, 026011(2024)
Nonuniform pseudo-magnetic fields in photonic crystals
Fig. 1. (a) Experimental sample of a heterostructure with nonuniform PMFs, consisting of two reversed gradient PhCs and a transition region. The PMF applied perpendicular to the PhCs is zero in the central yellow region, while has the opposite direction with the same magnitude in the upper and lower half parts. The sign of the PMF is referred to the
Fig. 2. (a) Quantization of LLs of two reversed gradient PhCs with
Fig. 3. (a) Experimental sample of two reversed gradient PhCs. Red and blue stars indicate the positions of the excited source. (b) and (c) Simulated distributions of electric fields of edge states at the top and bottom boundaries of a gradient PhC, corresponding to 10.72 and 11.0 GHz, respectively. (d) Experimental measurement of the edge state at the top boundary at 10.7 GHz. (e) Defined parameter
Fig. 4. (a) and (b) Distributions of the electric field of the large-area interface state in the simulation and experiment at 11.12 and 11.30 GHz, respectively. The measured region of the electric field is a part of the simulated region and PhC sample. (c) and (d) Normalized electric field intensity along the
Fig. 5. (a) and (b) Electric field distributions of the snake state at 10.42 and 10.30 GHz in the simulation and experiment, respectively. (c) Propagation of the snake state under the disorder realized by moving the position of metallic pillars. (d) and (e) Simulated and experimental electric field intensities along the
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Bin Yang, Xiaopeng Shen, Liwei Shi, Yuting Yang, Zhi Hong Hang. Nonuniform pseudo-magnetic fields in photonic crystals[J]. Advanced Photonics Nexus, 2024, 3(2): 026011
Category: Research Articles
Received: Jan. 2, 2024
Accepted: Feb. 27, 2024
Published Online: Mar. 19, 2024
The Author Email: Yang Yuting (yangyt@cumt.edu.cn)