首页 | 本学科首页   官方微博 | 高级检索  
     

太赫兹振荡器件之间同相位锁定机制的研究
引用本文:潘金涛, 王越, 许坤远. 太赫兹振荡器件之间同相位锁定机制的研究[J]. 华南师范大学学报(自然科学版), 2018, 50(1): 55-60. DOI: 10.6054/j.jscnun.2018013
作者姓名:潘金涛  王越  许坤远
作者单位:1.华南师范大学物理与电信工程学院,广州510006
摘    要:本文详细研究了平面纳米耿氏振荡器的耦合特性。研究表明:把两个器件直接并联组成阵列时,由于器件间的耦合较弱,两器件无法协同工作,因而输出信号随时间无规波动;为此我们通过在器件间引入额外的表面栅,利用栅极偏压增强耦合,使得器件工作处于基波相位锁定状态,从而输出幅度稳定、工作频率约为0.37 THz的信号。通过对器件沟道内部电子浓度的进一步分布分析,我们发现器件同相位锁定机制的微观实质为两沟道内部动力学偶极畴处于同步状态。由于双器件阵列的输出信号幅值为单器件的两倍,因此这种结构设计可以提升器件的输出功率。

关 键 词:耦合
收稿时间:2017-04-20
修稿时间:2017-05-11

In-phase Locking between Terahertz Oscillators
PAN J T, WANG Y, XU K Y. In-phase Locking between Terahertz Oscillators[J]. Journal of South China Normal University (Natural Science Edition), 2018, 50(1): 55-60. DOI: 10.6054/j.jscnun.2018013
Authors:PAN J T  WANG Y  XU K Y
Affiliation:1.School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou 510006,China
Abstract:The coupling characteristics of planar Gunn nano-oscillator are studied in detail. Studies have shown that: when two oscillators are directly connected in parallel, because the interaction between Gunn oscillations is too weak for the two oscillators to operate in a common state, the amplitude of current oscillations clearly changes with time randomly. For this reason, by adding additional top-gate between the oscillators, the gate bias is used to enhance the coupling strength. Under the gate regulation, the resulting output consists of purely first harmonic oscillations with a frequency of about 0.37 THz. Based on the further analysis of the internal electron density distributions along the device channel, we find that the micro-essence of in-phase locking regime is the synchronization state of the two-channel inner domain dynamics. The coupling current amplitude is twice that of a single channel device, therefore, this structural design can improve the output power of the device.
Keywords:Coupling
本文献已被 CNKI 等数据库收录!
点击此处可从《华南师范大学学报(自然科学版)》浏览原始摘要信息
点击此处可从《华南师范大学学报(自然科学版)》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号