Nanoscale plasmonic devices for dynamically controllable beam focusing and scanning

作者：Cetin A E^*; Sennaroglu A; Mustecaphoglu O E

来源：Photonics and Nanostructures-Fundamentals and Applications, 2010, 8(1): 7-13.

DOI：10.1016/j.photonics.2009.12.001

• Plasmonics
• Metallic nano-optic lenses
• Beam shaping
• Nano-scanner
• Beam deflection

We have performed simulations to investigate the variable focusing and scanning capability of metallic nano-slit configurations. In a symmetric nanorod configuration inside an aperture with adjustable offset of the center rod, the focal position is found to be variable in the 0.5-3.5 mu m range. In a ladder configuration of the rods, the transmitted beam is found to be deflected up to 23 degrees. Horizontal displacement of rods allows for finer control of angular scanning up to 4 degrees. Such slit geometries offer the potential to be controlled by using nano-positioning systems for applications in dynamic beam shaping and scanning on the nanoscale.

• 出版日期2010-1