中国激光, 2019, 46 (5): 0508005, 网络出版: 2019-11-11
基于超快电子自旋动力学的太赫兹辐射研究进展 下载: 1469次
Research Progress of Terahertz Radiation Based on Ultrafast Electron Spin Dynamics
非线性光学 太赫兹辐射 超快光谱 自旋流 逆自旋霍尔效应 自旋泽贝克效应 nonlinear optics terahertz radiation ultrafast spectroscopy spin current inverse spin-Hall effect spin Seebeck effect
摘要
回顾了近年来利用超快自旋动力学过程产生太赫兹(THz)辐射的研究进展。介绍了基于逆自旋霍尔效应和逆Rashba-Edelstein效应的瞬态自旋流-电荷流转换,指出铁磁/非磁性异质结构已被用于设计低成本、高效率的THz辐射源。通过优化膜厚、生长条件、衬底和结构,可进一步提高基于自旋电子学的THz发射器的效率和带宽。简述了THz发射光谱在研究超快自旋泽贝克效应形成动力学中的应用。
Abstract
Recent research progress of terahertz (THz) radiation generation based on the ultrafast spin dynamics is reviewed. The transient spin-charge conversion based on the inverse spin Hall effect and the Rashba-Edelstein effect is introduced, and it is pointed out that the ferromagnetic/non-magnetic heterostructure has been used to design a low-cost and high-efficiency THz radiation source. The efficiency and bandwidth of a spintronics-based THz emitter can be improved by optimizing layer thickness, growth conditions, substrates, and construction. The applications of the THz emission spectrum are outlined in the study of the ultrafast formation dynamics of the spin Seebeck effect.
金钻明, 宋邦菊, 李炬赓, 张顺浓, 阮舜逸, 戴晔, 阎晓娜, 林贤, 马国宏, 姚建铨. 基于超快电子自旋动力学的太赫兹辐射研究进展[J]. 中国激光, 2019, 46(5): 0508005. Zuanming Jin, Bangju Song, Jugeng Li, Shunnong Zhang, Shunyi Ruan, Ye Dai, Xiaona Yan, Xian Lin, Guohong Ma, Jianquan Yao. Research Progress of Terahertz Radiation Based on Ultrafast Electron Spin Dynamics[J]. Chinese Journal of Lasers, 2019, 46(5): 0508005.