4 February 2013 Resonance mode-switching in terahertz metamaterials based on varying gallium arsenide conductivity
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Optical Engineering, 52(2), 024001 (2013). doi:10.1117/1.OE.52.2.024001
Abstract
An asymmetric planar terahertz (THz) metamaterial (MM) is designed to be composed of two different single split-ring resonators (SRR) and its character is simulated in the THz region. Gallium arsenide (GaAs) is inserted between the gap of two separated single SRR, and through modulation of its conductivity (σ GaAs ) we achieved the switching of three different resonance modes and researched the influence of σ GaAs on transmission of MM. The resonant structure of MM can be switched from the two fundamental LC-modes to the new LC-mode and dipole resonance mode through the coupling LC-mode with the increasing σ GaAs . Such dynamical control of MM resonances provides an efficient way to manipulate electromagnetic wave to push mode-switching of resonance and could be implemented in terahertz devices to achieve additional functionalities.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Xiaolong Cao, Jianquan Yao, Cai Yuan, Kai Zhong, "Resonance mode-switching in terahertz metamaterials based on varying gallium arsenide conductivity," Optical Engineering 52(2), 024001 (4 February 2013). http://dx.doi.org/10.1117/1.OE.52.2.024001
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KEYWORDS
Gallium arsenide

Terahertz radiation

Computer simulations

Terahertz metamaterials

Resonators

Metamaterials

Switching

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