Influence of the evanescent waves on the imaging characteristics of microspheres

Fengge Wang; Yurong Cao; Songlin Yang; Xiaoqing Wang; Jianguo Wang; Tao Chen; Yong-Hong Ye

doi:10.1117/12.2505948

15 November 2018 Influence of the evanescent waves on the imaging characteristics of microspheres

Fengge Wang, Yurong Cao, Songlin Yang, Xiaoqing Wang, Jianguo Wang, Tao Chen, Yong-Hong Ye

Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109643H (2018) https://doi.org/10.1117/12.2505948
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China

Abstract

We add a 20-nm-thick SiO film between a fully immersed BaTiO₃ glass (BTG) microsphere and a sample with subdiffraction features, and study its imaging properties. Compared with a fully immersed BTG microsphere without the SiO film, the magnification becomes larger, and the initial image position is farther away from the sample. The imaging rules no longer satisfy the imaging rules used in geometrical optics. We propose that the thin SiO film can enhance evanescent waves and the enhanced evanescent waves affect the magnification and the image position in BTG microsphere imaging. Our studies will help to understand the imaging rules of microspheres more comprehensively.

Citation Download Citation

Fengge Wang, Yurong Cao, Songlin Yang, Xiaoqing Wang, Jianguo Wang, Tao Chen, and Yong-Hong Ye "Influence of the evanescent waves on the imaging characteristics of microspheres", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109643H (15 November 2018); https://doi.org/10.1117/12.2505948

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