| Resolution Characteristics of GaAs/GaAlAs Transmission Photocathode |
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| 引用本文： | YAN Jin-liang,ZHAO Yin-nu,ZHU Chang-chun. Resolution Characteristics of GaAs/GaAlAs Transmission Photocathode[J]. 半导体光子学与技术, 1999, 5(2): 96-100 |
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| 作者姓名： | YAN Jin-liang ZHAO Yin-nu ZHU Chang-chun |
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| 作者单位： | School of Electron. & Inform.Eng.，Xi'an Jiaotong University，Xi'an 710049，CHN |
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| 基金项目： | The "95" Project of Weapon Scientific Research Institute (No.9523-6). |
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| 摘 要： | The reolution characteristic of GaAs/GaAlAs trransmission photocathode is an important parameter in third generation intensifiers.The modulation transfer function of GaAs/GaAlAs transmission photocathode is derived from a simple two-dimensional diffusion equation.The theoretical resolution characteristic of a 2 μm thick GaAs/GaAlAs transmission photocathode is calculated.The relationship between resolution and parameters in GaAs/GaAlAs transmission photocathode is discussed.A conclusion is shown that one can design the GaAs/GaAlAs transmission photocathode for maximum quantum efficiency,since the sacrifice in the resolution doesn‘t limit system performances.
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| 关 键 词： | 镓砷/镓铝砷 材料 光阴极 定额量 第三代增强器 |
| 收稿时间： | 1998-11-20 |
Resolution Characteristics of GaAs/GaAlAs Transmission Photocathode |
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| YAN Jin-liang,ZHAO Yin-nu,ZHU Chang-chun. Resolution Characteristics of GaAs/GaAlAs Transmission Photocathode[J]. Semiconductor Photonics and Technology, 1999, 5(2): 96-100 |
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| Authors: | YAN Jin-liang ZHAO Yin-nu ZHU Chang-chun |
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| Abstract: | The reolution characteristic of GaAs/GaAlAs trransmission photocathode is an important parameter in third generation intensifiers.The modulation transfer function of GaAs/GaAlAs transmission photocathode is derived from a simple two-dimensional diffusion equation.The theoretical resolution characteristic of a 2 μm thick GaAs/GaAlAs transmission photocathode is calculated.The relationship between resolution and parameters in GaAs/GaAlAs transmission photocathode is discussed.A conclusion is shown that one can design the GaAs/GaAlAs transmission photocathode for maximum quantum efficiency,since the sacrifice in the resolution doesn‘t limit system performances. |
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| Keywords: | GaAs/GaAlAs Photocathode Quantum Yield Resolution Third Generation Intensifier CLC number:TN383.4 Document code:A |
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