半导体超晶格太赫兹倍频器研究  

Terahertz frequency multiplier based on semiconductor superlattice

作　　者：曹俊诚[1,2] 韦舒婷 郑永辉 冯伟 王长[1,2] CAO Juncheng;WEI Shuting;ZHENG Yonghui;FENG Wei;WANG Chang(Key Laboratory of Terahertz Solid-State Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;School of Physics and Electronic Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China)

机构地区：[1]中国科学院上海微系统与信息研究所太赫兹固态技术重点实验室,上海200050 [2]中国科学院大学材料科学与光电工程中心,北京100049 [3]江苏大学物理与电子工程学院,江苏镇江212013

出　　处：《太赫兹科学与电子信息学报》2023年第4期517-522,共6页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家自然科学基金资助项目(61927813;61975225);上海市科学技术委员会资助项目(21DZ1101102)。

摘　　要：提出一种基于电场驱动的GaAs基微带超晶格高阶谐波产生的太赫兹倍频器,利用平衡方程方法分析了倍频器在磁场下峰值功率输出和在参数空间(Edc,Eac)的分布情况。研究表明,在(Edc,Eac)的参数平面内,磁场对二次和三次谐波功率的峰值影响不大,但磁场会拓宽谐波输出功率的峰值区域,提高在(Edc,Eac)参数空间内输出峰值功率的概率。当Eac确定时,谐波发射功率峰值的位置会受到直流电场产生的布洛赫振荡频率fB、交流电场产生的调制布洛赫振荡频率fM B和磁场引起的回旋振荡频率fc的影响而发生变化。研究表明,基于半导体超晶格的太赫兹倍频器是很有应用潜力的太赫兹波发生器件。Terahertz frequency multiplier based on high-order harmonic generation of GaAs-based miniband superlattices is studied by using balance equation approach.With the presence of magnetic field,the peak power output of the frequency multiplier and its distribution in the parameter space(Edc,Eac)are carefully analyzed.The study shows that in the parameter plane of(Edc,Eac),the magnetic field has little influence on the peak size of the second and third harmonic of output power,but the magnetic field will broaden the peak area of the harmonic output power,which can improve the probability of output peak power in the parameter space of(Edc,Eac).When Eac is determined,the position of the peak harmonic emission power will be affected by the Bloch oscillation frequency fB generated by the DC electric field,the modulated Bloch oscillation frequency fMB generated by the AC electric field,and the cyclotron oscillation frequency fc caused by the magnetic field.The results indicate that the THz frequency multiplier based on semiconductor superlattice is a potential THz wave generator.

关 键 词：超晶格 太赫兹 谐波 倍频器 

分 类 号：O472[理学—半导体物理]