The focusing performance of an aperiodic double layer metallic grating
Research output: Contribution to journal › Article › peer-review
Colleges, School and Institutes
In this paper, a double-layer aperiodic metallic grating is designed and the focusing performance is numerically researched using the finite-difference time-domain method. A sub-wavelength focusing spot is achieved and the depth of focus is twice the length of the incident wavelength. With its ease of fabrication, the designed aperiodic double-layer metallic grating has great potential in applications such as data storage, laser direct writing and optical probe.
|Early online date||2 Jun 2014|
|Publication status||Published - 1 Jul 2014|
- Focusing performance, Aperiodic grating, Metallic subwavelength structure