SEVEN SINGLE BEAM PROJECTS: 1a, IN-LINE GABOR HOLOGRAMS

Hundreds of thousands of Gabor type holograms were made at Fermi National Accelerator Laboratory's 15 Foot Bubble Chamber in the 1980's! The photo below shows the ruby laser’s beam path, entering from a window at the bottom of the sphere, boiling the liquid hydrogen that fills it.  The holographic film transport is diametrically opposite the laser window.

Here is a photograph of some particle tracks holographed in the chamber, showing that this configuration, although simple, but awkward, can be useful.

For the truth about these holograms, click here.

REFERENCES:
D. Gabor, "A New Microscopic Principle", Nature 161, p.77 (1948)
D. Gabor, "Microscopy by Reconstructed Wavefronts", Proc. Roy. Soc. (A), CXCVII, p.454, (1948)
G. L. Rogers, "Experiments in Diffraction Microscopy", Proc. Roy. Soc. (Edinburgh), A63, p193, (1952)

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