کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1860839 | 1530560 | 2015 | 5 صفحه PDF | دانلود رایگان |
• Successfully focusing a 600 nm light using a circularly C-shaped nanoantenna array.
• The computation time spent by using MoM is approximately 10–100 times smaller than FDTD.
• A good agreement is observed using our MoM to the classic FDTD method.
An ultra-thin flat lens is proposed for focusing circularly polarized light in the visible range. Anisotropic C-shaped nanoantennas with phase discontinuities are used to form the metasurface of the lens. The phase response of the C-shaped nanoantennas can be manipulated by simply rotating the angle of the unit nanoantenna. A 600 nm incident circularly polarized light is focused by the proposed techniques. Good agreements are observed by using our MoM and a commercial FDTD software package. The computation time spent by using MoM is approximately 10–100 times smaller than using FDTD. All the results show the proposed nanoantenna array has a great potential for nanoscale optical microscopy, solar cell energy conversion enhancement, as well as integrated optical circuits.
Journal: Physics Letters A - Volume 379, Issues 45–46, 4 December 2015, Pages 3008–3012