Abstract
A high-performance all-dielectric lens, formed by integrating a conventional plano-convex lens with a high-index
microsphere lens (PCM), was developed for far-field
super-resolution applications. The PCM lens features a
theoretical resolution of ∼ λ/2.5 in air with a WD ∼ 2 µm
away from the lens. When combined with a femtosecond
laser, the actual patterning resolution can reach ∼ λ/3.5.
The unusual focusing properties were theoretically and
experimentally verified, and direct laser nano-writing of
arbitrary patterns and nanostructures on various substrates
was demonstrated. This Letter can be naturally extended
to other super-resolution applications, including imaging,
sensing, and trapping, with the potential of developing nextgeneration low-cost direct laser nano-m
microsphere lens (PCM), was developed for far-field
super-resolution applications. The PCM lens features a
theoretical resolution of ∼ λ/2.5 in air with a WD ∼ 2 µm
away from the lens. When combined with a femtosecond
laser, the actual patterning resolution can reach ∼ λ/3.5.
The unusual focusing properties were theoretically and
experimentally verified, and direct laser nano-writing of
arbitrary patterns and nanostructures on various substrates
was demonstrated. This Letter can be naturally extended
to other super-resolution applications, including imaging,
sensing, and trapping, with the potential of developing nextgeneration low-cost direct laser nano-m
| Original language | English |
|---|---|
| Pages (from-to) | 1168-1171 |
| Journal | Optics Letters |
| Volume | 45 |
| Issue number | 5 |
| Early online date | 21 Feb 2020 |
| DOIs | |
| Publication status | Published - 1 Mar 2020 |