中国物理B ›› 2023, Vol. 32 ›› Issue (6): 64211-064211.doi: 10.1088/1674-1056/ac8726

所属专题: SPECIAL TOPIC — Celebrating the 100th Anniversary of Physics Discipline of Xiamen University

• • 上一篇    下一篇

Improving resolution of superlens based on solid immersion mechanism

Zhanlei Hao(郝占磊), Yangyang Zhou(周杨阳), Bei Wu(吴贝),Yineng Liu(刘益能), and Huanyang Chen(陈焕阳)§   

  1. Institute of Electromagnetics and Acoustics and Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China
  • 收稿日期:2022-05-07 修回日期:2022-07-27 接受日期:2022-08-05 出版日期:2023-05-17 发布日期:2023-05-17
  • 通讯作者: Yineng Liu, Huanyang Chen E-mail:lyn610@xmu.edu.cn;kenyon@xmu.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2020YFA0710100), the National Natural Science Foundation of China (Grant Nos. 92050102 and 11874311), and the Fundamental Research Funds for the Central Universities (Grant Nos. 20720220033 and 20720200074).

Improving resolution of superlens based on solid immersion mechanism

Zhanlei Hao(郝占磊), Yangyang Zhou(周杨阳), Bei Wu(吴贝),Yineng Liu(刘益能), and Huanyang Chen(陈焕阳)§   

  1. Institute of Electromagnetics and Acoustics and Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China
  • Received:2022-05-07 Revised:2022-07-27 Accepted:2022-08-05 Online:2023-05-17 Published:2023-05-17
  • Contact: Yineng Liu, Huanyang Chen E-mail:lyn610@xmu.edu.cn;kenyon@xmu.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2020YFA0710100), the National Natural Science Foundation of China (Grant Nos. 92050102 and 11874311), and the Fundamental Research Funds for the Central Universities (Grant Nos. 20720220033 and 20720200074).

摘要: Super-resolution imaging with superlens has been one of the fundamental research topics. Unfortunately, the resolution of superlens is inevitably restrained by material loss. To address the problem, we introduce the solid immersion mechanism into the slab superlens and the cylindrical superlens. The proposed solid immersion slab superlens (SISSL) and the solid immersion cylindrical superlens (SICSL) can improve the resolution by converting evanescent wave to propagating wave using high refractive index materials. From the perspective of applications, the cylindrical superlens with finite cross section and the ability of magnification or demagnification has more advantages than the slab superlens. Therefore, we focus on demonstrating analytically the super-resolution imaging of SICSL. Due to the impedance mismatching caused by solid immersion mechanism, the whispering gallery modes (WGMs) are excited between SICSL and the air interface. We clarify the excitation conditions of WGMs and analyze their influence on the imaging quality of SICSL. The SISSL and SICSL may pave a way to apply in lithography technique and real-time biomolecular imaging in future.

关键词: super-resolution imaging, material loss, solid immersion cylindrical superlens, whispering gallery modes

Abstract: Super-resolution imaging with superlens has been one of the fundamental research topics. Unfortunately, the resolution of superlens is inevitably restrained by material loss. To address the problem, we introduce the solid immersion mechanism into the slab superlens and the cylindrical superlens. The proposed solid immersion slab superlens (SISSL) and the solid immersion cylindrical superlens (SICSL) can improve the resolution by converting evanescent wave to propagating wave using high refractive index materials. From the perspective of applications, the cylindrical superlens with finite cross section and the ability of magnification or demagnification has more advantages than the slab superlens. Therefore, we focus on demonstrating analytically the super-resolution imaging of SICSL. Due to the impedance mismatching caused by solid immersion mechanism, the whispering gallery modes (WGMs) are excited between SICSL and the air interface. We clarify the excitation conditions of WGMs and analyze their influence on the imaging quality of SICSL. The SISSL and SICSL may pave a way to apply in lithography technique and real-time biomolecular imaging in future.

Key words: super-resolution imaging, material loss, solid immersion cylindrical superlens, whispering gallery modes

中图分类号:  (Diffraction efficiency, resolution, and other hologram characteristics)

  • 42.40.Lx
77.22.Gm (Dielectric loss and relaxation) 42.79.Bh (Lenses, prisms and mirrors) 42.55.Sa (Microcavity and microdisk lasers)