Abstract

Metamaterial device with double layers of split ring resonators (SRRs) on flexible substrate is proposed for building a new terahertz (THz)-wave near-field imaging system with real-time performance. The SRRs work as an array of probes that reserve the object near-field information and transfer it to the detection system, which is based on the frequency up-conversion with nonlinear crystal DAST (4-dimethylamino-N-methyl-4-stilbazolium tosylate). A flexible polymer is used for the substrate of the metamaterial device, which finally covers the DAST crystal for the THz wave imaging experiment.

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