Time characteristic measuring device and system

Abstract

An embodiment of the invention provides a time characteristic measuring device and system. The device comprises a synchronous controller, a laser, an optical fiber array and a computing device. The synchronous controller is used for controlling working states of the laser and a streak camera through two paths of pulse signals. The laser is used for outputting pulse laser according to control of the synchronous controller. The optical fiber array comprises a plurality of fibers in different lengths. The optical fiber array is used for transmitting the pulse laser. The pulse laser output by thelaser irradiates to the streak camera through the optical fiber array. The streak camera is used for obtaining a scanned image, wherein the scanned image comprises laser points formed by the pulse laser. The computing device is used for calculating the time characteristic of the streak camera according to the distance between two laser points in the scanned image in the horizontal direction and the length difference between the corresponding two fibers. Therefore, the device and system can measure the time characteristic of the streak camera.

Description

technical field [0001] The invention relates to the technical field of high-speed photography, in particular to a time characteristic measuring device and system. Background technique [0002] Streak cameras, also known as variable image tube scanning cameras, are used to detect and record ultrafast phenomena. Streak cameras use slits to intercept one-dimensional line images on the target image, and continuously record their changes over time. Because of their ultra-high time resolution and the ability to continuously record events, they have become an important high-speed photography technology. Diagnostic equipment is widely used in research fields such as detonation physics, shock wave physics, accelerator physics, inertial confinement fusion (ICF) and laser-matter interaction. [0003] The temporal characteristic of the streak camera is an important indicator of the streak camera, which not only determines the accuracy of the experimental data in time, but also affects ...

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Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the embodiment of the present invention is to provide a time characteristic measurement device and system, which can measure the time characteristics corresponding to different gears of the streak camera, especially for the gears of 10 ns and above Accurately measure the time characteristics of bits to avoid the situation that the time characteristics cannot be accurately measured due to too short pulse intervals when using the etalon calibration method

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