Studies of plasmonic hot-spot translation by a metal-dielectric layered superlens

Author

• Mark D. Thoreson, Birck Nanotechnology Center, Purdue UniversityFollow
• Rasmus Nielsen, Birck Nanotechnology Center, Purdue University
• Paul R. West, Birck Nanotechnology Center, Purdue UniversityFollow
• Arian Kriesch, Birck Nanotechnology Center, Purdue University
• Zhengtong Liu, Birck Nanotechnology Center, Purdue University
• Jieran R. Fang, Birck Nanotechnology Center, Purdue UniversityFollow
• Ulf Pescheld, Birck Nanotechnology Center, Purdue University
• Alexander V. Kildishev, Birck Nanotechnology Center, Purdue UniversityFollow
• Vladimir M. Shalaev, Birck Nanotechnology Center, Purdue UniversityFollow
• Alexandra Boltasseva, Birck Nanotechnology Center, Purdue UniversityFollow

Abstract

We have studied the ability of a lamellar near-field superlens to transfer an enhanced electromagnetic field to the far side of the lens. In this work, we have experimentally and numerically investigated superlensing in the visible range. By using the resonant hot-spot field enhancements from optical nanoantennas as sources, we investigated the translation of these sources to the far side of a layered silver-silica superlens operating in the canalization regime. Using near-field scanning optical microscopy (NSOM), we have observed evidence of superlens-enabled enhanced-field translation at a wavelength of about 680 nm. Specifically, we discuss our recent experimental and simulation results on the translation of hot spots using a silver-silica layered superlens design. We compare the experimental results with our numerical simulations and discuss the perspectives and limitations of our approach.

Keywords

superlens; canalization; silver; silicon dioxide; finite-difference time-domain simulations; near-field scanning optical microscopy; OPTICAL-PROPERTIES; NEAR-FIELD; COMPOSITES; NANOPARTICLES; RESONANCES; PARTICLES; INDEX

DOI

10.1117/12.894225

Citation

Proc. SPIE 8093, Metamaterials: Fundamentals and Applications IV, 80931J (September 09, 2011); doi:10.1117/12.894225

Date of this Version

2011

Recommended Citation

Thoreson, Mark D.; Nielsen, Rasmus; West, Paul R.; Kriesch, Arian; Liu, Zhengtong; Fang, Jieran R.; Pescheld, Ulf; Kildishev, Alexander V.; Shalaev, Vladimir M.; and Boltasseva, Alexandra, "Studies of plasmonic hot-spot translation by a metal-dielectric layered superlens" (2011). Birck and NCN Publications. Paper 1076.
http://dx.doi.org/10.1117/12.894225