| MCP输入电子能量与微光像增强器信噪比的关系 |
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| 引用本文： | 石峰,程宏昌,贺英萍,梁宏军. MCP输入电子能量与微光像增强器信噪比的关系[J]. 应用光学, 2008, 29(4): 562-564 |
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| 作者姓名： | 石峰 程宏昌 贺英萍 梁宏军 |
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| 作者单位： | 1. 微光夜视技术国防科技重点实验室,陕西,西安,710065;西安应用光学研究所,陕西,西安,710065
2. 西安通信学院,数理教研室,陕西,西安,710106 |
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| 摘 要： | 为了提高MCP像增强器亮度增益，在微光像增强器中采用了新的电子倍增机构，即微通道板（MCP），并对作为电子倍增结构MCP的噪声产生机理进行分析。在MCP其他参数不变的条件下，通过调整MCP入射电子的能量和入射电子角度分布，优化了MCP最佳工作信噪比的工作条件，实现了优化MCP像增强器信噪比,提高了MCP像增强器的亮度增益。
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| 关 键 词： | 微通道板 像增强器 信噪比 |
| 收稿时间： | 2007-12-18 |
Optimization for signal-to-noise ratio of low-light-level image intensifier |
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| SHI Feng,CHENG Hong-chang,HE Ying-ping,LIANG Hong-jun. Optimization for signal-to-noise ratio of low-light-level image intensifier[J]. Journal of Applied Optics, 2008, 29(4): 562-564 |
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| Authors: | SHI Feng CHENG Hong-chang HE Ying-ping LIANG Hong-jun |
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| Affiliation: | 1.Key Laboratory for Low-light-level Technology of COSTIND, Xi′an 710076, China; 2.Xi′an Institute of Applied Optics, Xi′an 710065, China |
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| Abstract: | In order to improve the luminance gain of microchannel plate image intensifier, an electron multiplier mechanism-microchannel plate (MCP) was used in low light level image intensifier. The noise mechanism in the MCP was analyzed. By adjusting the energy and angle distribution of the incident electrons at MCP and keeping other MCP parameters unchanged, the optimum operation conditions of MCP for best signal-to-noise ratio were found. The best signal-to-noise ratio of the MCP image intensifier was achieved and the brightness gain of MCP image intensifier was improved. |
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| Keywords: | microchannel plate (MCP) image intensifier tube signal-to-noise ratio |
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