Tunable resonant mode switch of split-ring resonators in terahertz regime

Cao Xiaolong; Yao Jianquan; Yuan Cai; Zhao Xiaolei; Zhong Kai

doi:10.3788/HPLPB20132509.2324

Volume 25 Issue 09

Jul. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(09): 2324-2328

Qiu Weicheng, Wang Rui, Xu Zhongjie, et al. Optical crosstalk of HgCdTe PV linear array detector[J]. High Power Laser and Particle Beams, 2012, 24: 2324-2330. doi: 10.3788/HPLPB20122410.2325

Citation:

Cao Xiaolong, Yao Jianquan, Yuan Cai, et al. Tunable resonant mode switch of split-ring resonators in terahertz regime[J]. High Power Laser and Particle Beams, 2013, 25: 2324-2328. doi: 10.3788/HPLPB20132509.2324

Qiu Weicheng, Wang Rui, Xu Zhongjie, et al. Optical crosstalk of HgCdTe PV linear array detector[J]. High Power Laser and Particle Beams, 2012, 24: 2324-2330. doi: 10.3788/HPLPB20122410.2325

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Tunable resonant mode switch of split-ring resonators in terahertz regime

doi: 10.3788/HPLPB20132509.2324

Cao Xiaolong^{1,2
,
,},
Yao Jianquan^1,2,
Yuan Cai^1,2,
Zhao Xiaolei^1,2,
Zhong Kai^1,2

1.
Institute of Laser and Opto-electronics,College of Precision Instrument and Opto-electronics Engineering,Tianjin University,Tianjin 300072,China; 2.Key Laboratory of Opto-electronics Information Technology Tianjin University,Ministry of Education,Tianjin 300072,China

Received Date: 2012-12-11
Rev Recd Date: 2013-04-18
Publish Date: 2013-07-17

Abstract

Abstract

An optically tunable split-ring resonator (SRR) has been designed on silicon substrate. In the terahertz regime, the samples tunable dual-resonant properties have been obtained through modulation of the conductivity of silicon substrate. We put gallium arsenide (GaAs) into the gap of SRR, and find that the resonant structure of SRR can be changed by adjusting the conductivity of GaAs. Along with the increase of the conductivity of GaAs, the SRR switches the resonance frequency from dual-band LC and dipolar resonance mode to single-band closed-ring mode. Without destroying the SRRs physical structure, the method of changing the conductivity of semiconductor can switch resonant mode and can be implemented in terahertz devices to achieve additional functionalities.
- split-ring resonator,
- terahertz,
- transmission,
- metamaterials

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