在高能密度物理、天体物理实验和等离子体辐射研究中，涉及许多皮秒级单次事件。现有分幅相机的时间分辨受微通道板渡越时间的限制，极限时间分辨仅有 60ps，难以满足激光-等离子体相互作用研究中皮秒时间分辨的诊断需求。 项目针对激光-等离子体相互作用研究中超高时间分辨的诊断瓶颈，基于半导体中探针光非线性全光调制效应，提出并探究一种新型的超高速单次瞬态X射线成像方法，以期解决激光-等离子体相互作用研究中的皮秒时间分辨诊断难题。该技术与传统分幅相机相比，具有飞秒时间响应、皮秒时间分辨、单光子灵敏度的优点，由此组成的超高速成像系统对高温、高密度等离子体状态及随时空演化过程、内爆动力学和等离子体界面诊断具有重要的推进作用，对超快现象和超短过程的测量及认知具有重要的应用价值，可广泛应用于深空探测、核物理、高能物理等学科领域。

Picosecond scale,single-transit waveforms have become commonplace in high energy density physics, laser fusion, plasma radiation and combustion. Because of the electron transit time limiting in the microchannel plate(MCP),the extreme time resolution of the framing camera based on the single MCP is 60ps,it is difficult to meet the demand of picosecond resolution at the study of laser pulse interact with plasmas. The objective of this study is to investigate a x-ray detection technique based the optical probe modulation in a semiconductorand and develop a novel class of high speed single transient ionizing radiation detector technologies that will enable critical diagnostics for the the study of intense laser pulse interact with plasmas， which is currently lacking.This detector concept will be capable of femtosecond temporal response,picosecond resolution,and singlephoton sensitivity.The ultrafast imaging system based on this technology will provide adequate fidelity to accurately measure plasma histories and implosion dynamics .These study is quite valuable to the detection and cognition of the ultrafast phenomenon and ultrashort process, and can also be widely used in deep space surveys, nuclear physics, high-energy physics and other fields.