Cyclops laser
For smaller experiments this would not be enough of an effect to worry about, but with the much larger and more powerful Shiva already under design, some way of further improving the beam smoothness of the laser needed to be studied.The simplest way to eliminate these effects was to filter them out physically using what essentially amounts to a Fourier transform technique applied to the beam's spatial intensity profile.Imaging spatial filters are, in effect, small inverted telescopes inserted in the laser beam to focus the light through a pinhole.Cyclops was effectively a single-beam of the larger Shiva design, one that could be completed as quickly as possible in order to identify potential problems and come up with the best arrangement for the filters.In this goal Cyclops was successful, and every major ICF effort since has used the spatial filtering technique, leading to ever-growing laser "beamlines" on the order of 100 m today.
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