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2011 International Conference on Infrared, Millimeter, and Terahertz Waves最新文献

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Planar antennas for THz radiation detector based on a MOSFET 基于MOSFET的太赫兹辐射探测器的平面天线
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105129
P. Kopyt, J. Marczewski, K. Kucharski, J. Lusakowski, W. Gwarek
This paper presents a design of planar antennas integrated with MOSFETs to form a THz radiation detector. The antennas have been developed on thin substrates in order to increase the detector responsivity through eliminating substrate modes responsible for electromagnetic power losses.
本文提出了一种平面天线与mosfet集成构成太赫兹辐射探测器的设计方案。为了通过消除造成电磁功率损耗的基板模式来提高探测器的响应性,天线被开发在薄基板上。
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引用次数: 14
Infrared/terahertz double resonance spectroscopy remote sensing 红外/太赫兹双共振光谱遥感
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105115
D. Phillips, Elizabeth A. Tanner, H. Everitt, F. D. De Lucia
IR/THz double resonance spectroscopy has recently been proposed as a method of chemical remote sensing with isotopic molecular recognition specificity at atmospheric pressures for distances approaching one kilometer.[1] Double resonance signatures are calculated, from which the sensitivity and hardware requirements for a double resonance remote sensing spectrometer may be estimated. The extension of this technique to heavier and more complex molecules is discussed.
红外/太赫兹双共振光谱最近被提出作为一种化学遥感方法,在接近一公里的大气压力下具有同位素分子识别特异性。[1]计算了双共振特征,由此估计了双共振遥感光谱仪的灵敏度和硬件要求。讨论了将这种技术推广到更重和更复杂的分子。
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引用次数: 0
THz detection of small molecule vapors over long paths in the atmospheric transmission windows 小分子蒸汽在大气传输窗口长路径上的太赫兹探测
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6104789
J. Melinger, Yihong Yang, Mahboubeh Mandeghar, Alisha J. Shutler, D. Grischkowsky
We describe the initial phase of a long path terahertz time-domain spectroscopy apparatus to detect THz rotational spectra of small vapor phase molecules within the atmospheric transparency windows. We discuss the measurements first for a relatively short path THz propagation path of 6.2 meters, and then for a much longer path of 170 meters.
我们描述了用于探测大气透明窗口内小气相分子太赫兹旋转光谱的长径太赫兹时域光谱装置的初始相位。我们首先讨论了相对较短的6.2米太赫兹传播路径的测量,然后讨论了更长的170米太赫兹传播路径的测量。
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引用次数: 2
Compressive imaging applied to infrared-based semiconductor failure analysis 压缩成像在红外半导体失效分析中的应用
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105248
Ting Sun, Gary Woods, K. Kelly
We present IR emission images obtained from semiconductor devices using compressive sensing mathematics combined with a single-element infrared photon detector as method of defect detection. High signal to noise ratio, robust measurements and fast acquisition have make compressive imaging a strong supplement to traditional IR analysis systems.
我们提出了利用压缩感知数学和单元素红外光子探测器相结合的方法从半导体器件中获得红外发射图像作为缺陷检测方法。高信噪比、鲁棒测量和快速采集使压缩成像成为传统红外分析系统的有力补充。
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引用次数: 0
Hot electron microbolometers based on GaN heterostructures for THz applications 太赫兹应用中基于GaN异质结构的热电子微热计
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105191
R. Ramaswamy, K. Wang, A. Muraviev, R. Gaska, J. Yang, A. Sergeev, R. Olac-vaw, V. Mitin
Microbolometers based on two dimensional electron gas (2DEG) medium in GaN semiconductor were fabricated and characterized. Low contact resistance (below 0.5 Ω·mm) achieved in our devices ensures that the THz voltage primarily drops across the active region. Due to small electron momentum relaxation time, the inductive part of the impedance in our devices is small, so these sensors can be combined with standard antennas or waveguides. Optical transmission measurements of the GaN heterostructures indicate that the 2DEG has significant coupling to the THz radiation due to Drude absorption up to frequencies well above 3 THz (100 cm−1) caused by high electron concentration (∼1–4 × 1013 cm−2) and short momentum relaxation time (∼10−12 sec). The normalized terahertz responsivity level defined as (dJ/J)/P is estimated to be 1.2×10−2 W−1 at 1.84 THz with dR/dT of ∼3Ω/K at room temperature in our device.
制备了基于二维电子气体(2DEG)介质的GaN半导体微测热计,并对其进行了表征。在我们的器件中实现的低接触电阻(低于0.5 Ω·mm)确保了太赫兹电压主要在有源区域下降。由于电子动量弛豫时间小,我们的器件中阻抗的电感部分很小,因此这些传感器可以与标准天线或波导结合使用。氮化镓异质结构的光学传输测量表明,由于高电子浓度(~ 1 - 4 × 1013 cm−2)和短动量弛豫时间(~ 10−12秒)导致的频率远高于3 THz (100 cm−1)的德鲁德吸收,2DEG与太赫兹辐射具有显著的耦合。定义为(dJ/J)/P的归一化太赫兹响应水平在1.84 THz下估计为1.2×10−2 W−1,dR/dT为3Ω/K。
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引用次数: 1
In vivo THz fiber-scanning mammography of early breast cancer in mice 小鼠早期乳腺癌的体内太赫兹纤维扫描乳房x线摄影
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6104940
Hua Chen, Te-Hsuen Chen, Shih-Chen Fu, Wen-Jeng Lee, Tzu-Fang Tseng, Jen-Tang Lu, Y. Tsai, Yu-You Huang, E. Chuang, Yuh-Jing Hwang, Chi-Kung Sun
We performed in vivo THz-fiber-scanning transmission imaging study on a subcutaneous xenograft mouse model for early human breast cancer detection. We continuously monitored the growth of human breast cancer in mice. The in vivo study indicates the THz imaging can distinguish cancer cells from the surrounding fatty tissue with a high sensitivity.
我们对皮下异种移植小鼠模型进行了体内太赫兹纤维扫描透射成像研究,用于早期人类乳腺癌的检测。我们持续监测人类乳腺癌在小鼠体内的生长情况。体内研究表明,太赫兹成像可以将癌细胞与周围脂肪组织区分开来,灵敏度高。
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引用次数: 1
Planar terahertz circuits using thin dielectric waveguides 使用薄介质波导的平面太赫兹电路
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105221
Xianbo Yang, J. Hejase, P. Paladhi, P. Chahal
In this paper, the use of polymer-ceramic nanocomposites in the fabrication of THz planar circuits at the wafer-level is introduced. Thin ribbon dielectric waveguides (50∼60μm) made from SU-8 — Barium Titanate (BaTiO3) composites are used in the fabrication of THz ribbon waveguides and circuits. Details of material characteristics, fabrication process and an example power splitter circuit are presented.
本文介绍了聚合物-陶瓷纳米复合材料在片级太赫兹平面电路中的应用。由SU-8 -钛酸钡(BaTiO3)复合材料制成的薄带状介质波导(50 ~ 60μm)用于制造太赫兹带状波导和电路。详细介绍了分路电路的材料特性、制作工艺和实例。
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引用次数: 2
Nanoscale infrared spectroscopy with a thermal source: Nano-FTIR 带热源的纳米红外光谱:纳米ftir
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6104770
F. Huth, M. Schnell, J. Wittborn, N. Ocelić, R. Hillenbrand
We demonstrate a FTIR system that allows for infrared-spectroscopic nano-imaging with a thermal source (nano-FTIR). Based on super-focusing of thermal radiation with an infrared antenna and strong signal enhancement using an asymmetric FTIR spectrometer, we improve the spatial resolution of conventional IR spectroscopy by 2 orders of magnitude.
我们展示了一个FTIR系统,它允许红外光谱纳米成像与一个热源(纳米FTIR)。基于红外天线对热辐射的超聚焦和非对称红外光谱仪的强信号增强,将传统红外光谱的空间分辨率提高了2个数量级。
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引用次数: 0
Application of continuously frequency-tunable sub-MMW gyrotron to dynamic nuclear polarization at 14.1 T and 30 K for NMR 连续频率可调亚毫米波回旋管在14.1 T和30k核磁共振动态极化中的应用
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6104960
T. Fujiwara, Y. Matsuki, K. Ueda, T. Idehara, R. Ikeda, K. Kosuga, Shinji Nakamura, M. Toda, T. Anai
A continuously frequency tunable gyrotron generated submillimeter wave at 395 GHz over a bandwidth of 1 GHz with a power of 10 W. This gyrotron enabled the optimization of high-field dynamic nuclear polarization for the sensitivity enhancement of solid-state NMR without changing the static magnetic field.
连续频率可调回旋管产生395 GHz的亚毫米波,带宽为1ghz,功率为10w。该回旋管在不改变静态磁场的情况下,优化了高场动态核极化,增强了固态核磁共振的灵敏度。
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引用次数: 0
Transmission line performance and plans for the gyrotron complex on the DIII-D tokamak DIII-D托卡马克上回旋管复合体的传输线性能和计划
Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6104797
J. Lohr, M. Blank, P. Borchard, S. Cauffman, M. Cengher, J. Doane, R. Ellis, K. Felch, Y. Gorelov, C. Moeller, S. Noraky, D. Ponce, A. Richenderfer, M. Shapiro
A major upgrade to the electron cyclotron heating complex on the DIII-D tokamak is underway. Two depressed collector gyrotrons are being added to the complex and the transmission lines are being upgraded. Transmission line efficiencies are being increased by reduction in the number of miter bends together with improved alignment resulting in improved mode purity.
DIII-D托卡马克上的电子回旋加速器加热复合体正在进行重大升级。两个抑制集电极回旋管正在被添加到综合设施中,输电线路正在升级。传输线效率的提高是由于减少了斜接弯曲的数量,同时改进了对准,从而提高了模式纯度。
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引用次数: 0
期刊
2011 International Conference on Infrared, Millimeter, and Terahertz Waves
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