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Rev Sci Instrum. 2008 Oct;79(10):10F547. doi: 10.1063/1.2979881.

A novel backscatter focus diagnostic for the TRIDENT 200 TW laser.

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  • 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.


Here we present the first direct focal spot images and analysis of an ultrahigh intensity short-pulse laser focus (>5x10(19) W/cm(2)) on target. Such a focal spot characterization is typically done previous to the shot with a low-power alignment beam using equivalent plane imaging techniques. The resulting intensity of the shot is then inferred from these results. We report on the development of a backscatter focus diagnostic, which enables imaging of the on-target full-power focal spot.

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