Abstract
The focusing properties of a germanium decagonal photonic quasicrystal flat lens with different scatterer radii have been analyzed. For different wavelengths and polarization modes, the lenses have different scatterer radius thresholds resulting in different focusing properties. For a point source of light in the transverse-electric mode, we found dual-focusing occurs along the symmetry axis within a range of scattering radii. As scatterer radius increases, the dual-focusing image power and far-field-focusing image quality diminish, whereas near-field-focusing image quality, dual-focusing image distance, and the summed object-image distance all increase.
| Original language | English |
|---|---|
| Pages (from-to) | 138-143 |
| Number of pages | 6 |
| Journal | Photonics and Nanostructures - Fundamentals and Applications |
| Volume | 12 |
| Issue number | 2 |
| DOIs | |
| State | Published - Apr 2014 |
| Externally published | Yes |
Keywords
- Image quality
- Lens
- Photonic quasicrystal
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