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引言三代象增强器是一种采用GaAs光电阴极的双近贴象管。二代管和三代管的主要差别在于光电阴极。1965年负电子亲和势光电阴极的发现是新型光电发射作研究的起点。1975年Antypas和Edgecumbe实现了GaAs/GaAlAs双异质结结构,为制作高质量GaAs透射式光电阴极提供了可能性。从那时起,人们就着手研究三代象增强器。在GaAs光电阴
Introduction Three generations of image intensifier is a kind of double proximity tube with GaAs photocathode. The main difference between the second generation tube and the third generation tube is the photocathode. The discovery of negative electron affinity photocathodes in 1965 is the starting point for the research of new photoemission. In 1975, Antypas and Edgecumbe realized the GaAs / GaAlAs double heterojunction structure, which made it possible to fabricate high quality GaAs transmissive photocathode. Since then, people have been studying three generations of image enhancers. The GaAs photocathode