Selective enhanced resonances of two asymmetric terahertz nano resonators.

Autor: Bahk YM; Center for Subwavelength Optics and Department of Physics and Astronomy, Seoul National University, Seoul, 151-747, South Korea. ym850325@snu.ac.kr, Choi JW, Kyoung J, Park HR, Ahn KJ, Kim DS
Jazyk: angličtina
Zdroj: Optics express [Opt Express] 2012 Nov 05; Vol. 20 (23), pp. 25644-53.
DOI: 10.1364/OE.20.025644
Abstrakt: We studied the electromagnetic interaction between two asymmetric terahertz nano resonators, rectangular holes which have a few hundred micron lengths but nanoscale widths. We report that the dominant resonant transmission of the structures can be modulated by the horizontal distance between two rectangles due to the different oscillation strength of the asymmetric coupling at two different resonance frequencies. Our results are significant for an optimum design of rectangular holes in terahertz frequency regime for applications such as sensitive nanoparticle detection and terahertz filters.
Databáze: MEDLINE