太赫兹辐射
皮秒
光电子学
材料科学
光学
探测器
砷化镓
光电导性
信号(编程语言)
物理
激光器
计算机科学
程序设计语言
作者
L. Dazhang,J. E. Cunningham,Matthew B. Byrne,Suraj P. Khanna,C. Wood,Andrew Burnett,S. M. Ershad,E. H. Linfield,A. G. Davies
摘要
We have measured the picosecond time-domain response of Goubau-line waveguides, formed on quartz substrates, by integrating regions of low-temperature-grown gallium arsenide into the waveguides to act both as pulsed current emitters and detectors. Using one pair of photoconductive switches for excitation and a second pair for detection, pulsed signal propagation of a low dispersion electric field mode was demonstrated in the Goubau-lines, with the signal bandwidth extending beyond 800 GHz. Furthermore, it was demonstrated that terahertz bandstop filters can be integrated into a Goubau-line for removal of specific frequencies from the transmitted pulses.
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