Three-Frame Pulsed Holographic Interferome Try Of A Helical Plasma

The design of diagnostic apparatus for our large plasma physics experiments involves some unpleasant constraints. In addition, to seeking accurate quantitative results, one seeks to design reliable and flexible apparatus Which can perform in the hostile environment of a megajoule capacitor bank. discharge. The holographic interferometer described below has successfully met these requirements. Except for the high quality lasers the system consists of ordinary optics and components mounted on small tables or exist.- ing framework- We record interferograms on essentially every plasma, shot and operate for weeks without realigning. There is no doubt that holography provides much greater ease and flexibility than previous Nach-Zehnder interferometry.