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Eight-frame holographic interferometry system for transient plasma diagnostics.

L Soto, H Chuaqui, M Skowronek

|November 12, 2010

Summary

This study introduces a multiframe Fresnel holography technique for capturing transient electrical discharges. It enables time-resolved holographic interferometry of phenomena like Z pinches with 10-ns pulse delays.

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Area of Science:

Physics
Optics
Plasma Physics

Background:

Transient electrical discharges, such as Z pinches, are complex phenomena requiring advanced diagnostic techniques.
Traditional holographic methods may lack the temporal resolution to capture rapid dynamic processes.

Purpose of the Study:

To develop and demonstrate a multiframe technique for time-resolved Fresnel holographic interferometry.
To apply this technique for visualizing transient electrical discharges.

Main Methods:

Utilized a multiframe approach with Fresnel holography.
Employed a frequency-doubled, Q-switched Nd:YAG laser producing 6-ns pulses.
Generated two sets of eight consecutive pulses with a 10-ns delay between pulses using beam splitters.
Recorded individual interferograms for each pulse set.

Main Results:

Successfully obtained time-resolved Fresnel holographic interferograms.
Demonstrated the technique's capability to visualize dynamic processes in transient electrical discharges.
Presented interferograms from a gas-embedded Z pinch experiment.

Conclusions:

The developed multiframe Fresnel holography technique is effective for time-resolved diagnostics of transient electrical discharges.
The 10-ns pulse delay offers high temporal resolution for studying rapid plasma dynamics.
This method provides valuable insights into phenomena like Z pinches.