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Optically tuned terahertz modulator based on annealed multilayer MoS2.

ABSTRACT: Controlling the propagation properties of terahertz waves is very important in terahertz technologies applied in high-speed communication. Therefore a new-type optically tuned terahertz modulator based on multilayer-MoS2 and silicon is experimentally demonstrated. The terahertz transmission could be significantly modulated by changing the power of the pumping laser. With an annealing treatment as a p-doping method, MoS2 on silicon demonstrates a triple enhancement of terahertz modulation depth compared with the bare silicon. This MoS2-based device even exhibited much higher modulation efficiency than the graphene-based device. We also analyzed the mechanism of the modulation enhancement originated from annealed MoS2, and found that it is different from that of graphene-based device. The unique optical modulating properties of the device exhibit tremendous promise for applications in terahertz switch.

SUBMITTER: Cao Y

PROVIDER: S-EPMC4782166 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature

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Optically tuned terahertz modulator based on annealed multilayer MoS2.

Cao Yapeng Y Gan Sheng S Geng Zhaoxin Z Liu Jian J Yang Yuping Y Bao Qiaoling Q Chen Hongda H

Scientific reports 20160308

Controlling the propagation properties of terahertz waves is very important in terahertz technologies applied in high-speed communication. Therefore a new-type optically tuned terahertz modulator based on multilayer-MoS2 and silicon is experimentally demonstrated. The terahertz transmission could be significantly modulated by changing the power of the pumping laser. With an annealing treatment as a p-doping method, MoS2 on silicon demonstrates a triple enhancement of terahertz modulation depth c ...[more]

PMID: 26953153

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