streak camera
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streak camera

Streak tubes and streak cameras

       Method of optoelectronic registration of high speed processes is based on usage of pulsed streak tubes as time analyzing units of high speed systems and facilities. This method permits to obtain space-time characteristics of physical phenomenons and has a wide application in thermonuclear synthesis, quantum electronics, non-linear optics, aerodynamics, ballistics, biology, medicine researches and other fields of science and technology.

    Two methods of image registration by using streak tubes are the most widely adopted. They are photochronographic and frame imaging methods. In case of photochronographic mode an image of an object is projected on a photocathode as a narrow slit which is swept at a screen. Meanwhile a spatial coordination is transferred into the temporal one.

    Under the frame imaging mode two-dimension image-frame- is projected at a photocathode. A streak tube is blanked in the initial state. In time of unblanking the image is transferred to the screen and register one of the stages of a process. Step-by-step blanking and unblanking of a tube in combination with displacement of the frames along the screen permit to realize multiframe imaging.

        Fig. 1 Structure and principal of operation of a streak tube in a linear sweeping mode (a) and (for example)               brightness profile of a swept at the screen image during Δt time period (b), B(t)-brightness of the im function  ti         me, Δt-duration of sweep.

   

        Fig. 2. Structure and principle of operation of a streak tube operated in a frame mode(2х2 frames) (а) and (for           example) brightnesses  B1, B2, Bи B4 of consecutive frames at the moments of time t1, t2, tи t4 (b). 

Streak tubes operate in the temporal range from several seconds to femtoseconds.

Different types of photocathodes used in streak tubes permit to register processes occurred in NIR (up to 1.6 μm), visible and UV regions of the spectrum as well as in the range of vacuum UV, soft sand hard (up to 1MeV) X-ray radiation.

More detailed information about parameters of our streak tubes and streak cameras you can find in their description on our web-site, by looking through our publications about application of our devices,  mailing us or calling.