Abstract
We proposed a subwavelength imaging system at optical frequency region with metallic nanorod array. We calculated the field distribution at the different planes of imaging process using the finite-difference time-domain (FDTD) algorithm and found that the spatial resolution was 40 nm, which was much beyond the diffraction-limit and was limited by the array pitch. The typical configuration is a hexagonal arrangement with 40 nm periodicity of silver rods of 50 nm height and 20 nm diameter. The image formation highly depends on the coherence and the polarization of the dipole sources, the array pitch, and the source-array distance. The principle of our near-field imaging is based on the longitudinal resonance of the localized surface plasmon along a metallic nanorod. The spectral responses of the device are also investigated.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. B. Pendry, Phys. Rev. Lett. 85, 3966 (2000).
N. Fang, H. Lee, C. Sun, and X. Zhang, Science 308, 534 (2005).
A. Ono, J. Kato, and S. Kawata, Phys. Rev. Lett. 95, 267407 (2005).
P. B. Johnson and R. W. Christy, Phys. Rev. B 6, 4370 (1972).
J. R. Krenn, G. Schider, W. Rechberger, B. Lamprecht, A. Leitner, F. R. Aussenegg, and J. C. Weeber, Appl. Phys. Lett. 77, 3379 (2000).
J. Takahara, S. Yamagishi, H. Taki, A. Morimoto, and T. Kobayashi, Opt. Lett. 22, 475 (1997).
R. M. Dickson and L. A. Lyon, J. Pys. Chem. B 104, 6095 (2000).
J. C. Weeber, A. Dereux, C. Girard, J. R. Krenn, and J. P. Goudonnet, Phys. Rev. B 60, 9061 (1999).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ono, A., Kato, Ji. & Kawata, S. Sub-wavelength Imaging through Metallic Nanorod Array. MRS Online Proceedings Library 919, 506 (2006). https://doi.org/10.1557/PROC-0919-J05-06
Published:
DOI: https://doi.org/10.1557/PROC-0919-J05-06