论文标题
带有集成石墨烯连接的片上的Terahertz调制和排放
On-chip terahertz modulation and emission with integrated graphene junctions
论文作者
论文摘要
片上超快信号的有效调制和控制在Terahertz（THZ）通信中至关重要，并且是通往亚分界限限制光谱法的有前途的途径。二维（2D）材料可以为这些努力提供一个平台。我们探索了这一潜力，将高质量的石墨烯P-N连接在两种类型的平面传输线路中集成，以调节和发射皮秒脉冲。在共面条线几何形状中，我们证明了THZ信号传输的电气调制95％。在Goubau波导几何形状中，我们从光激发的石墨烯连接处实现了对THZ发射的完全可调控制。这些研究为片上信号操纵的发展提供了信息，并突出了THZ应用中2D材料的前景。
The efficient modulation and control of ultrafast signals on-chip is of central importance in terahertz (THz) communications and a promising route toward sub-diffraction limit THz spectroscopy. Two-dimensional (2D) materials may provide a platform for these endeavors. We explore this potential, integrating high-quality graphene p-n junctions within two types of planar transmission line circuits to modulate and emit picosecond pulses. In a coplanar stripline geometry, we demonstrate electrical modulation of THz signal transmission by 95%. In a Goubau waveguide geometry, we achieve complete gate-tunable control over THz emission from a photoexcited graphene junction. These studies inform the development of on-chip signal manipulation and highlight prospects for 2D materials in THz applications.
