Focusing surface plasmons by a plasmonic lens

Thanh Phong Vo; Alireza Maleki; James E. Downes; David W. Coutts; Judith M. Dawes

doi:10.1117/12.2060618

10 September 2014 Focusing surface plasmons by a plasmonic lens

Thanh Phong Vo, Alireza Maleki, James E. Downes, David W. Coutts, Judith M. Dawes

Proceedings Volume 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII; 91633L (2014) https://doi.org/10.1117/12.2060618
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

Abstract

Surface plasmons have been launched from free space optical beams (at an excitation wavelength of 700 nm) and focused in the plane using concentric curved gratings (or plasmonic lenses) etched into 30 nm-thick gold films. The performance of these devices was studied with numerical simulation and verified by near-field scanning optical microscopy experiments. These plasmonic lenses have been demonstrated to focus the launched surface plasmons effectively to a high intensity focal spot.

Citation Download Citation

Thanh Phong Vo, Alireza Maleki, James E. Downes, David W. Coutts, and Judith M. Dawes "Focusing surface plasmons by a plasmonic lens", Proc. SPIE 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII, 91633L (10 September 2014); https://doi.org/10.1117/12.2060618

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