Nanoscale plasmonic devices for dynamically controllable beam focusing and scanning

ÇETİN A. E., Sennaroglu A., Mustecaphoglu O. E.

PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS, cilt.8, sa.1, ss.7-13, 2010 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 8 Sayı: 1
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.photonics.2009.12.001
  • Dergi Adı: PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.7-13
  • Anahtar Kelimeler: Plasmonics, Metallic nano-optic lenses, Beam shaping, Nano-scanner, Beam deflection
  • Dokuz Eylül Üniversitesi Adresli: Hayır

Özet

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. (C) 2009 Elsevier B.V. All rights reserved.