中国物理B ›› 2018, Vol. 27 ›› Issue (8): 87302-087302.doi: 10.1088/1674-1056/27/8/087302
所属专题: SPECIAL TOPIC — Nanophotonics
• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇 下一篇
Qi You(游琪), Jia-Qi Zhu(祝家齐), Jun Guo(郭珺), Lei-Ming Wu(吴雷明), Xiao-Yu Dai(戴小玉), Yuan-Jiang Xiang(项元江)
Qi You(游琪), Jia-Qi Zhu(祝家齐), Jun Guo(郭珺), Lei-Ming Wu(吴雷明), Xiao-Yu Dai(戴小玉), Yuan-Jiang Xiang(项元江)
摘要:
A hybrid structure based on a planar waveguide (PWG) mode coupling a long-range surface plasmon resonance (LRSPR) mode is proposed to enhance the GH shift. Both the PWG mode and LRSPR mode can be in strong resonance, and these two modes can be coupled together due to the normal-mode splitting. The largest GH shift of PWG-coupled LRSPR structure is 4156 times that of the incident beam, which is 23 times and 3.6 times that of the surface plasmon resonance (SPR) structure and the LRSPR structure, respectively. As a GH shift sensor, the highest sensitivity of 4.68×107λ is realized in the coupled structure. Compared with the sensitivity of the traditional SPR structure, the sensitivity of our structure is increased by more than 2 orders, which theoretically indicates that the proposed configuration can be applied to the field of high-sensitivity sensors in the future.
中图分类号: (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))