太赫兹辐射
太赫兹间隙
照相混合
太赫兹光谱与技术
自旋电子学
太赫兹时域光谱学
极化(电化学)
光学
宽带
光电子学
物理
远红外激光器
材料科学
太赫兹超材料
激光器
凝聚态物理
化学
物理化学
铁磁性
作者
Xinhou Chen,Xiaojun Wu,Shengyu Shan,Fengwei Guo,Deyin Kong,Chun Wang,Tianxiao Nie,Chandan Pandey,Lianggong Wen,Weisheng Zhao,Cunjun Ruan,Jungang Miao,Yutong Li,Li Wang
摘要
Polarization shaped terahertz sources play a key factor in terahertz wireless communications, biological sensing, imaging, coherent control in fundamental sciences, and so on. Recently developed spintronic terahertz emitters have been considered as one of the next-generation promising high performance broadband terahertz sources. However, until now, polarization control, especially for twisting the circularly polarized terahertz waves at the spintronic terahertz source, has not yet been systematically explored and experimentally achieved. In this work, we not only demonstrate the generation of circularly polarized terahertz waves in cascade spintronic terahertz emitters via delicately engineering the amplitudes, applied magnetic field directions, and phase differences in two-stage terahertz beams but also implement the manipulation of the chirality, azimuthal angle, and ellipticity of the radiated broadband terahertz waves. We believe our work can help with further understanding of the ultrafast optical magnetic physics and may have valuable contributions for developing advance terahertz sources and optospintronic devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI