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过模结构0.14 THz高功率脉冲探测器研制

Development of 0.14 THz high-power pulse detector with overmoded structure

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摘要

基于n型硅在强电场下的热电子效应,初步研制了一种采用过模结构的0.14 THz高功率太赫兹脉冲探测器。该探测器由基模波导WR6、过渡波导、过模波导WR10,n型硅探测芯片和偏置恒流源组成。模拟分析了探测器的工作过程,给出了相对灵敏度表达式,结果表明过模探测器能很好地工作在TE10模式。合理设计了探测芯片的结构参数和加工工艺,完成了探测芯片的加工和探测器样机的制作。将探测器样机在0.14 THz相对论表面波振荡器的辐射场进行了初步的验证性实验,并与二极管检波器的测量结果进行了对比分析。结果表明:过模探测器样机的响应时间在ps量级,相对灵敏度约为0.12 kW-1,最大承受功率至少为数十W,可用于0.14 THz高功率脉冲的直接探测。

Abstract

Based on the hot electron effect of n-Si irradiated by high electric field, a 0.14 THz high-power terahertz pulse detector using overmoded structure is proposed and fabricated. The detector consists of a fundamental mode wavguide WR6, a tapered waveguide, an overmoded waveguide WR10, a detecting chip made of n-Si, and a bias constant current source. First, the working process of the detector is analyzed, showing that the detector can be operated in the TE10 mode well, and the expression of its relative sensitivity is given. Then, the structural parameters and manufacture techniques of detecting chip are reasonably designed, and the fabrication of detecting chips and detector prototypes is accomplished. Ultimately, the validation experiments of the detector prototype are carried out in the radiation field of the 0.14 THz relativistic surface wave oscillator, which are analyzed and compared with the measured results of diode detector. The experimental results show that, the overmoded detector prototype has a response time of picoseconds-level, the relative sensitivity of about 0.12 kW-1, and the maximum enduring power of tens of watts. Therefore, the sensor could be used to directly detect 0.14 THz high-power pulses.

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中图分类号:TN129;O441.5;TN305

DOI:10.3788/hplpb20132511.2959

所属栏目:太赫兹技术

收稿日期:2013-03-04

修改稿日期:2013-08-23

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作者单位    点击查看

王光强:西北核技术研究所, 西安 710024
王建国:西北核技术研究所, 西安 710024西安交通大学 电子与信息工程学院, 西安 710049
童长江:西北核技术研究所, 西安 710024
王雪锋:西北核技术研究所, 西安 710024
李爽:西北核技术研究所, 西安 710024
陆希成:西北核技术研究所, 西安 710024

联系人作者:王光强(wgq02@mails.tsinghua.edu.cn)

备注:王光强(1985-),男,助理研究员,博士,主要从事高功率太赫兹波的产生和测量技术研究

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引用该论文

Wang Guangqiang,Wang Jianguo,Tong Changjiang,Wang Xuefeng,Li Shuang,Lu Xicheng. Development of 0.14 THz high-power pulse detector with overmoded structure[J]. High Power Laser and Particle Beams, 2013, 25(11): 2959-2964

王光强,王建国,童长江,王雪锋,李爽,陆希成. 过模结构0.14 THz高功率脉冲探测器研制[J]. 强激光与粒子束, 2013, 25(11): 2959-2964

被引情况

【1】王光强,王建国,王雪锋,李爽. 过模矩形波导中硅芯片与基模亚毫米波的作用. 强激光与粒子束, 2014, 26(8): 83001--1

【2】王雪锋,王建国,王光强,李爽,熊正锋,陆希成,彭建昌西北核技术研究所, 西安 710024. 一种太赫兹脉冲探测芯片性能分析. 强激光与粒子束, 2014, 26(8): 83103--1

【3】王光强,王建国,朱湘琴,王雪锋,李爽. 圆波导硅探测结构对X波段电磁波模式的响应. 强激光与粒子束, 2014, 26(10): 103001--1

【4】王光强,王建国,王雪锋,李爽,曾鹏. 亚毫米波大功率脉冲探测器的初步研制. 强激光与粒子束, 2015, 27(4): 43103--1

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