Giant Electric Field Enhancement in Split Ring Resonators Featuring Nanometer-Sized Gaps

Bagiante, S.; Enderli, Florian; Fabiańska, J.; Sigg, H.; Feurer, Thomas (2015). Giant Electric Field Enhancement in Split Ring Resonators Featuring Nanometer-Sized Gaps. Scientific Reports, 5(8051), p. 8051. Nature Publishing Group 10.1038/srep08051

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Today's pulsed THz sources enable us to excite, probe, and coherently control the vibrational or rotational dynamics of organic and inorganic materials on ultrafast time scales. Driven by standard laser sources THz electric field strengths of up to several MVm−1 have been reported and in order to reach even higher electric field strengths the use of dedicated electric field enhancement structures has been proposed. Here, we demonstrate resonant electric field enhancement structures, which concentrate the incident electric field in sub-diffraction size volumes and show an electric field enhancement as high as ~14,000 at 50 GHz. These values have been confirmed through a combination of near-field imaging experiments and electromagnetic simulations.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics
08 Faculty of Science > Institute of Applied Physics > Lasers

UniBE Contributor:

Enderli, Florian and Feurer, Thomas

Subjects:

500 Science
500 Science > 530 Physics
600 Technology > 620 Engineering

ISSN:

2045-2322

Publisher:

Nature Publishing Group

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

08 Feb 2016 09:27

Last Modified:

26 Jun 2016 02:10

Publisher DOI:

10.1038/srep08051

BORIS DOI:

10.7892/boris.74985

URI:

https://boris.unibe.ch/id/eprint/74985

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