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题名: The effect of symmetry on resonant and nonresonant photoresponses in a field-effect terahertz detector
作者: Sun, JD(孙建东); Qin, H(秦华); Lewis, RA; Yang, XX(杨昕昕); Sun, YF(孙云飞); Zhang, ZP(张志鹏); Li, XX(李欣幸); Zhang, XY(张晓渝); Cai, Y(蔡勇); Wu, DM(吴东岷); Zhang, BS(张宝顺)
通讯作者: Qin, H (秦华)
刊名: APPLIED PHYSICS LETTERS
发表日期: 2015
DOI: 10.1063/1.4906536
卷: 106, 期:3, 页:5
收录类别: SCI
部门归属: 纳米器件及相关材料研究部
英文摘要: The effect of the symmetries in the terahertz (THz) field distribution and the field-effect channel on THz photoresponse is examined. Resonant excitation of cavity plasmon modes and nonresonant self-mixing of THz waves are demonstrated in a GaN/AlGaN two-dimensional electron gas with symmetrically designed nanogates, antennas, and filters. We found that the self-mixing signal can be effectively suppressed by the symmetric design and the resonant response benefits from the residual asymmetry. The findings suggest that a single detector may provide both high sensitivity from the self-mixing mechanism and spectral resolution from the resonant response by optimizing the degree of geometrical and/or electronic symmetries. (C) 2015 AIP Publishing LLC.
语种: 英语
JCR小类分区: 二区
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/3444
Appears in Collections:纳米器件及相关材料研究部_秦华团队_期刊论文

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Recommended Citation:
Sun, JD,Qin, H,Lewis, RA,et al. The effect of symmetry on resonant and nonresonant photoresponses in a field-effect terahertz detector[J]. APPLIED PHYSICS LETTERS,2015,106(3):5.
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