| Autor: |
Nagarajan A, Stoevelaar LP, Silvestri F, Siemons M, Achanta VG, Bäumer SMB, Gerini G |
| Jazyk: |
angličtina |
| Zdroj: |
Optics express [Opt Express] 2019 Jul 08; Vol. 27 (14), pp. 20012-20027. |
| DOI: |
10.1364/OE.27.020012 |
| Abstrakt: |
A superoscillatory lens (SOL) is known to produce a sub-diffraction hotspot that is useful for high-resolution imaging. SOLs have not yet been directly used in a confocal reflection setup, as the SOL suffers from poor imaging properties. Additionally, the illuminating intensity distribution of the SOL still has high-intensity rings called sidelobes coexisting with the central hotspot. By means of a reflection setup, which does not have the SOL in the detection chain, thereby mitigating the poor imaging properties, we assessed the resolution capabilities of a SOL. This was done for different objects, whose dimensions were both above and below the SOL field-of-view (FOV). We found that the sidelobe illumination degrades the imaging properties in the case of extended objects, limiting the applicability of a SOL system. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
