| 蝶形天线增强的HEMT室温太赫兹探测器 |
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| 引用本文： | 孙建东,孙云飞,周宇,张志鹏,林文魁,曾春红,吴东岷,张宝顺,秦华.蝶形天线增强的HEMT室温太赫兹探测器[J].微纳电子技术,2011,48(4):215-219. |
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| 作者姓名： | 孙建东 孙云飞 周宇 张志鹏 林文魁 曾春红 吴东岷 张宝顺 秦华 |
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| 作者单位： | 中国科学院苏州纳米技术与纳米仿生研究所纳米器件与应用重点实验室,江苏苏州,215123 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目(G2009CB929300); 中国科学院知识创新工程重要方向项目(Y0BAQ31001); 国家自然科学基金项目(60871077) |
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| 摘 要： | 介绍了一种基于GaN/AlGaN高电子迁移率晶体管(HEMT)的高速、高灵敏度室温太赫兹探测器。在太赫兹波辐射下,HEMT源漏端产生直流光电流,并能被栅压灵敏地调控。探测器中新颖的蝶形天线设计使接收到的太赫兹电场得到显著增强,提高了探测器的响应度。通过测量探测器对不同偏振方向的太赫兹光的响应,有效验证了蝶形天线对太赫兹电场的增强作用。室温下,探测器的等效噪声功率约为5×10-10W/Hz21,平均响应度达42mA/W。实验结果表明,光电流的产生与二维电子气沟道的场效应特性和入射太赫兹波电场在电子沟道中的分布密切相关。自混频理论能很好地描述实验结果。
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| 关 键 词： | 探测器 太赫兹 蝶形天线 高电子迁移率晶体管(HEMT) 自混频 有限时域差分法(FDTD) |
Room Temperature Terahertz Detectors Based on HEMTs Enhanced by Bowtie Antennas |
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| Sun Jiandong,Sun Yunfei,Zhou Yu,Zhang Zhipeng,Lin Wenkui,Zeng Chunhong,Wu Dongmin,Zhang Baoshun,Qin Hua.Room Temperature Terahertz Detectors Based on HEMTs Enhanced by Bowtie Antennas[J].Micronanoelectronic Technology,2011,48(4):215-219. |
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| Authors: | Sun Jiandong Sun Yunfei Zhou Yu Zhang Zhipeng Lin Wenkui Zeng Chunhong Wu Dongmin Zhang Baoshun Qin Hua |
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| Affiliation: | Sun Jiandong,Sun Yunfei,Zhou Yu,Zhang Zhipeng,Lin Wenkui,Zeng Chunhong,Wu Dongmin,Zhang Baoshun,Qin Hua (Key Laboratory of Nanodevices,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China) |
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| Abstract: | A room temperature terahertz(THz) detector based on a GaN/AlGaN high electron mobility transistor(HEMT) enhanced by bowtie antenna was presented.Due to its micron sized field effect nature and antenna enhancement,the detector is of high speed and high responsivity.Under terahertz irradiation,the direct photocurrent was observed when the electron channel was strongly modulated by the gate voltage.The received terahertz electric field was significantly enhanced and the detection response was improved due to t... |
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| Keywords: | detector terahertz bowtie antenna high electron mobility transistor(HEMT) self-mixing finite difference time domain(FDTD) |
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