单光子灵敏和高时空分辨的大动态范围科学增强相机

发布时间：2018-06-01 18:01

  本文选题：科学成像 + 增强相机　； 参考：《红外技术》2017年09期

【摘要】：增强相机结合了MCP增强器和图像传感器这两个成熟的技术,便于对其各组件构成的优化及择优组合,获得单光子灵敏的探测能力,以及精确的空间和时间分辨能力,可在极微弱光条件下获得准确的位置和时间信息,成为一个可用于科学成像的理想的大面阵成像探测器,特别是可结合门控电源,获得超快的曝光时间,并使增强相机也可在较高的光照条件下工作,覆盖一个相当大的工作范围。本文描述了增强相机的构成及其各构成组件的工作特性,介绍了MCP增强器各组件的择优组合和优化构成,结合一个门控电源对光阴极的超高速和高频率的选通,以及一个百万像素的图像传感器经光学耦合后的高速读出,科学增强相机可具有纳秒甚至亚纳秒的时间分辨力,并兼具模拟和光子计数两种模式的大动态范围成像能力,在光子计数模式,具有可达到单光子探测灵敏度,和106 count?s-1?cm-2数量级以上的最大计数率,以及10?m(FWHM)的空间分辨的能力。
[Abstract]:The enhanced camera combines two mature techniques, MCP intensifier and image sensor. It is convenient to optimize and select the components of the enhanced camera to obtain the single photon sensitive detection ability and accurate spatial and time resolution. The accurate position and time information can be obtained under the condition of very weak light. It is an ideal large plane array imaging detector for scientific imaging, especially in combination with the gated power supply to obtain ultra-fast exposure time. The enhanced camera can also work under higher illumination conditions, covering a considerable range of work. This paper describes the composition of the enhanced camera and the working characteristics of each component, introduces the optimal combination and optimization of each component of the MCP intensifier, and combines the ultra-high speed and high frequency gating of a gated power supply to the photocathode. As well as a high speed readout of a megapixel image sensor after optical coupling, the science enhanced camera can have a time resolution of nanosecond or even sub-nanosecond, and a large dynamic range imaging capability of both analog and photon counting modes. In the photon counting mode, the sensitivity of single photon detection can be achieved, the maximum counting rate of 10 6 count?s-1?cm-2 order of magnitude, and the spatial resolution of 10 m count?s-1?cm-2 FWHM can be achieved.
【作者单位】： 北方夜视技术股份有限公司;微光夜视技术重点实验室;
【基金】：国家自然科学基金(61275152)
【分类号】：TB852.1
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本文编号：1965131