Intensity‐Enhanced Apodization Effect on an Axially Illuminated Circular‐Column Particle‐Lens
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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A particle can function as a refractive lens to focus a plane wave, generating a narrow, high intensive, weak-diverging beam within a sub-wavelength volume, known as the ‘photonic nanojet’. It is known that apodization method, in the form of an amplitude pupil-mask centrally situated on a particle-lens, can further reduce the waist of a photonic nanojet, however, it usually lowers the intensity at the focus due to blocking the incident light. In this paper, the anomalously intensity-enhanced apodization effect was discovered for the first time via numerical simulation of focusing of the axially illuminated circular-column particle-lenses, and a greater than 100% peak intensity increase was realised for the produced photonic nanojets.
| Iaith wreiddiol | Saesneg |
|---|---|
| Rhif yr erthygl | 1700384 |
| Nifer y tudalennau | 4 |
| Cyfnodolyn | Annalen der Physik |
| Cyfrol | 530 |
| Rhif y cyfnodolyn | 2 |
| Dyddiad ar-lein cynnar | 22 Rhag 2017 |
| Statws | Cyhoeddwyd - Chwef 2018 |
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