Adjusting the functionality of terahertz split-ring resonators through geometry

Hannes Merbold; Andreas Bitzer; Fabrizio Carbone; Axel Murk; Jan Wallauer; Markus Walther; Thomas Feurer

doi:10.1117/12.908107

20 February 2012 Adjusting the functionality of terahertz split-ring resonators through geometry

Hannes Merbold, Andreas Bitzer, Fabrizio Carbone, Axel Murk, Jan Wallauer, Markus Walther, Thomas Feurer

Proceedings Volume 8260, Ultrafast Phenomena and Nanophotonics XVI; 826016 (2012) https://doi.org/10.1117/12.908107
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

We examine planar double split-ring resonators (SRRs) consisting of two concentric rings with either opposite, similar, or asymmetric gap orientation. Depending on the geometry we observe resonance hybridization, metamaterial induced transparency, or the excitation of dark resonances. These properties can be used for SRR based sensing applications, to realize strongly dispersive behavior, or for determining the optical properties of metals. We further find that THz SRRs featuring very narrow gaps on the micro- or nanoscale can provide in-gap enhancement factors of several 10,000, a property particularly useful for the realization of nonlinear THz experiments.

Citation Download Citation

Hannes Merbold, Andreas Bitzer, Fabrizio Carbone, Axel Murk, Jan Wallauer, Markus Walther, and Thomas Feurer "Adjusting the functionality of terahertz split-ring resonators through geometry", Proc. SPIE 8260, Ultrafast Phenomena and Nanophotonics XVI, 826016 (20 February 2012); https://doi.org/10.1117/12.908107

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