一种响应波长在120 nm～200 nm的紫外像增强器

Ultraviolet image intensifier with response at 120 nm～200 nm

摘要: 介绍了一种响应波长在120 nm～200 nm的紫外像增强器。它是采用CsI直接蒸镀在MCP上形成反射式光电阴极，用MgF2作为输入窗口，光纤面板作为输出窗的真空光电器件。管型采用近贴聚焦结构，从而使得弥散和像差得以减小，具有高的量子效率和空间分辨率。在静态测试中，空间分辨率可以达到18 lp/mm。该紫外像增强器可用于空间科学和天文观测领域。

Abstract: An ultraviolet image intensifier with response at 120～200nm is introduced. It is a vacuum optoelectronic device, with CsI directly evaporated on its MCP to form a reflective photocathode, with MgF2 as input window, and optical fiber as output window. The proximity focus structure is adopted for reducing dispersion and image distortion. It has high quantum efficiency and spatial resolution. Under the static condition, the spatial resolution of the ultraviolet image intensifier reaches 18Lp/mm, and it has great potentials in space science and astronomy observation.