التفاصيل البيبلوغرافية
| العنوان: |
Modulating Polarization in Second Harmonic Generation through Symmetry Evolution in Plasmonic Lattices |
| المؤلفون: |
Shijia He, Yi Wang, Tianyu Wang, Dongda Wu, Junqiao La, Jiang Hu, Yan Zheng, Fanzhou Lv, Yudie Huang, Wenxin Wang |
| سنة النشر: |
2024 |
| المجموعة: |
Smithsonian Institution: Figshare |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Medicine, Neuroscience, Evolutionary Biology, Infectious Diseases, Physical Sciences not elsewhere classified, surface plasmon polariton, second harmonic generation, photonic local density, matched bulk nanostructures, fold enhancement relative, 0 × 10, tunable unit structures, dielectric lattice comprised, peak shg signal, unit symmetry decreases, >< sub >∞<, cross pair ), unit symmetry, >< sub, plasmonic lattice, ldos ), cross pair, >, symmetry evolution, structural symmetry, way forward, v <, shg signals |
| الوصف: |
We report a strategy for preparing cost-effective plasmonic square lattices with tunable unit structures of circles, crosses, and circle-cross pairs on a centimeter scale. The asymmetrical electromagnetic (EM) field distribution of the lattice enhances second harmonic generation (SHG) under oblique incidence. The SHG signals are progressively strengthened as the unit symmetry decreases from C ∞ v (circle) to C 4 v (cross) to C 2 v (circle-cross pair). The peak SHG signal is observed from the plasmonic lattice with a circle-cross pair, showcasing a conversion efficiency of 1.0 × 10 –2 , which is a 7.3-fold enhancement relative to the dielectric lattice comprised of circle units. This notably high conversion efficiency of SHG is on par with that of phase-matched bulk nanostructures under normal incidence, benefiting from the Bloch-surface plasmon polariton (Bloch-SPP) modes associated with the distribution of the photonic local density of states (LDOS). Furthermore, the SHG emission exhibits distinctive directional and polarization characteristics as the unit symmetry is reduced. This work offers valuable insights into a structural symmetry-dependent SHG in plasmonic lattices and the way forward for the design of functional nonlinear plasmonic devices. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| العلاقة: |
https://figshare.com/articles/journal_contribution/Modulating_Polarization_in_Second_Harmonic_Generation_through_Symmetry_Evolution_in_Plasmonic_Lattices/25399144Test |
| DOI: |
10.1021/acsnano.3c11312.s001 |
| الإتاحة: |
https://doi.org/10.1021/acsnano.3c11312.s001Test |
| حقوق: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.CE028A00 |
| قاعدة البيانات: |
BASE |
