Plasmonic nanofocusing of light in an integrated silicon photonics platform

Boris Desiatov*, Ilya Goykhman, Uriel Levy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


The capability to focus electromagnetic energy at the nanoscale plays an important role in nanoscinece and nanotechnology. It allows enhancing light matter interactions at the nanoscale with applications related to nonlinear optics, light emission and light detection. It may also be used for enhancing resolution in microscopy, lithography and optical storage systems. Hereby we propose and experimentally demonstrate the nanoscale focusing of surface plasmons by constructing an integrated plasmonic/photonic on chip nanofocusing device in silicon platform. The device was tested directly by measuring the optical intensity along it using a near-field microscope. We found an order of magnitude enhancement of the intensity at the tip's apex. The spot size is estimated to be 50 nm. The demonstrated device may be used as a building block for "lab on a chip" systems and for enhancing light matter interactions at the apex of the tip.

Original languageAmerican English
Pages (from-to)13150-13157
Number of pages8
JournalOptics Express
Issue number14
StatePublished - 4 Jul 2011


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