Real-Time Terahertz Modulation Using Gold-MoS₂ Metasurface With Electromagnetically Induced Transparency-Like Resonance

Abstract

Terahertz (THz) communication is a rapidly advancing field with applications spanning space exploration, wireless communication, and security checks. Achieving effective intensity modulation of THz radiation is a crucial requirement for THz technology. In this study, we propose an approach to achieve real-time and precise control over THz radiation using a gold split-ring metasurface integrated with MoS2 layers. We demonstrate the emergence of an electromagnetically induced transparency-like resonance through optical pumping, resulting in high-quality THz signal transmission with impressive modulation depth of 81% at 612 GHz. These findings hold great promise for a wide range of THz applications, including sensing, switching, and filtering.

Keywords

• Electromagnetically induced transparency (EIT)
• modulation
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• terahertz metasurface