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近年来国际上掀起了开拓和发展亚毫米波频谱的热潮。这是由于通过多年的努力摸索到了产生一定功率的亚毫米波相干辐射源的理论和方法,并出现了几种亚毫米波的有效探测器件,如肖特基势垒混频器、约瑟夫逊结探测器、热释电探测器和锑化铟、锗掺镓等光子探测器。砷化镓肖特基势垒混频器作为亚毫米波探测用具有室温使用、宽频带、快速响应、机械稳定和有一定的灵敏度等优点。金属与半导体相接触在其界面出现势垒是肖特基在1939年发现的。在采用了分子束外延、电子束光刻等现代工艺技术后赋于新的生命力,为开拓、发展亚毫米波频谱作出了贡献。
In recent years, the international community has set off a wave of exploring and developing the sub-millimeter wave spectrum. This is due to many years of efforts to explore the theory and method of generating a certain power of sub-millimeter wave coherent radiation source, and there have been several sub-millimeter wave effective detection devices such as Schottky barrier mixer, Josephson junction Detectors, pyroelectric detectors and indium antimony, germanium doped gallium and other photon detectors. Gallium arsenide Schottky barrier mixer as a sub-millimeter wave with the use of room temperature, broadband, fast response, mechanical stability and a certain degree of sensitivity and so on. Metal and semiconductor contact in its interface barrier is found in 1939 by Schottky. After adopting the modern technology of molecular beam epitaxy and electron beam lithography, it is endowed with new vitality and contributed to the exploration and development of sub-millimeter wave spectrum.