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首页> 外文会议>Congress of the international commission for optics: Optics for the next millennium;ICO XVIII >High-reliability GaAs image intensifier with unfilmed microchannel plate
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High-reliability GaAs image intensifier with unfilmed microchannel plate

机译：带有未成膜微通道板的高可靠性GaAs图像增强器

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Abstract: Current GaAs image intensifier technology requires that the microchannel plate (MCP) have a thin dielectric film on the side facing the photocathode. This protective coating substantially reduces the amount of outgassing of ions and neutral species from the microchannels. The prevention of MCP outgassing is necessary in order to prevent the `poisoning' of the Cs:O surface on the GaAs photocathode. Many authors have experimented with omitting the MCP coating. The results of such experiments invariably lead to an intensifier with a reported useful life of less than 100 hours, due to contamination of the Cs:O layer on the photocathode. Unfortunately, the MCP film is also a barrier to electron transport within the intensifier. Substantial enhancement of the image intensifier operating parameters is the motivation for the removal of the MCP film. This paper presents results showing for the first time that it is possible to fabricate a long lifetime image intensifier with a single uncoated MCP.!6
机译：摘要：目前的GaAs图像增强技术要求微通道板（MCP）在面对光电阴极的一侧具有薄的介电膜。该保护涂层大大减少了离子和中性物质从微通道中的逸出量。为了防止GaAs光电阴极上的C​​s：O表面“中毒”，必须防止MCP脱气。许多作者已经尝试过省略MCP涂层。由于光阴极上Cs：O层的污染，这些实验的结果总是导致增强器的使用寿命少于100小时。不幸的是，MCP膜也是增强器内电子传输的障碍。图像增强器操作参数的显着提高是去除MCP胶片的动机。本文介绍的结果首次表明，可以使用单个未涂层的MCP制造长寿命的图像增强器。6

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