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Proceedings, IEEE Tenth International Conference on Terahertz Electronics最新文献

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Efficient THz-emitters for low-temperature-grown GaAs photomixers 用于低温生长的砷化镓光电混合器的高效太赫兹发射器
Pub Date : 2002-11-07 DOI: 10.1109/THZ.2002.1037589
C. Sydlo, J. Sigmund, H. Hartnagel, G. Loata, K. Siebert, H. Roskos
Different design techniques have been applied to low-temperature grown (LT-) GaAs photomixers and the respective antennas to increase the efficiency and output power of these devices. High DC-photocurrents have been achieved with interdigitated structures and transmission lines have been used to improve matching between antenna and photomixer. The input impedances of antenna structures on GaAs substrate have been investigated and optimised for matching and technological feasibility.
不同的设计技术被应用于低温生长(LT-) GaAs光电混合器和相应的天线,以提高这些器件的效率和输出功率。采用交叉结构实现了高直流光电流,并采用传输线改善了天线与光电混合器的匹配。研究了砷化镓衬底上天线结构的输入阻抗,并对其进行了匹配和技术可行性优化。
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引用次数: 3
Enhancement of THz emission from semiconductor surfaces 半导体表面太赫兹辐射的增强
Pub Date : 2002-11-07 DOI: 10.1109/THZ.2002.1037586
M. Johnston, A. Dowd, D. Whittaker, A. Corchia, A. Davies, E. Linfield
We have studied the generation of coherent pulses of terahertz (THz) radiation from semiconductor surfaces both experimentally and using a Monte-Carlo carrier dynamics simulation. Collimated THz beams are observed from surface-field THz emitters and three methods of improving the efficiency of these emitters are demonstrated: (i) by applying a magnetic field, (ii) by reducing the effective refractive index of the device and (iii) by altering the geometry of the device. An enhancement of 21/spl times/ is seen in a prism based GaAs/InAs THz emitter.
我们研究了从半导体表面产生太赫兹(THz)辐射相干脉冲的实验和使用蒙特卡罗载流子动力学模拟。从表面场太赫兹发射器观察到准直太赫兹光束,并演示了三种提高这些发射器效率的方法:(i)通过施加磁场,(ii)通过降低器件的有效折射率和(iii)通过改变器件的几何形状。在基于棱镜的GaAs/InAs太赫兹发射器中可以看到21/spl倍/的增强。
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引用次数: 1
Achromatically injection-seeded terahertz-wave parametric generator 无色差注入种子太赫兹波参数发生器
Pub Date : 2002-07-29 DOI: 10.1109/THZ.2002.1037588
K. Imai, K. Kawase, H. Minamide, H. Ito
An achromatically injection-seeded terahertz-wave parametric generator (ais-TPG) was constructed using MgO:LiNbO/sub 3/ crystals and a tunable seeder using a stationary dispersion-compensated optical arrangement. Without readjusting the mirrors, smooth tuning of the terahertz-wave over the 0.6/spl sim/2.6 THz range was obtained by adjusting the seeder wavelength alone. The feasibility of this system for terahertz-wave absorption measurements over a wide frequency range was successfully demonstrated using low-pressure water vapor.
采用MgO:LiNbO/ sub3 /晶体和固定色散补偿光学装置的可调谐种子,构建了无色差注入种子太赫兹波参数发生器(as - tpg)。在不调整反射镜的情况下,仅通过调整种子波长就可以在0.6/spl sim/2.6 THz范围内实现太赫兹波的平滑调谐。该系统的可行性,太赫兹波吸收测量在广泛的频率范围内,成功地证明了使用低压水蒸气。
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引用次数: 54
期刊
Proceedings, IEEE Tenth International Conference on Terahertz Electronics
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