Abstract
A multiframe technique that uses Fresnel holography is described. Splitting of the initial pulse by means of 50/50 beam splitters provides two sets of eight consecutive pulses with approximately the same energy but with different angles. Each interferogram is recorded separately. The technique has been used to obtain time-resolved Fresnel holographic interferograms of transient electrical discharges, such as Z pinch. A frequency-doubled, Q-switched Nd:YAG laser (6-ns FWHM) is used. A delay between consecutive pulses of 10 ns is achieved, and it is mainly limited by the physical size of the laboratory. Interferograms obtained on a gas-embedded Z pinch are shown.
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