Kerr cell

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Related to Kerr cell: Kerr effect, Pockels cell
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Noun1.Kerr cell - optical device consisting of a transparent cell with two electrodes between two polarizing media; passes light only if the two planes of polarization are parallel; used as a high-speed shutter or to modulate a laser beam
optical device - a device for producing or controlling light
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The attractive teens were discussing polarising filters, Kerr cells, and the quadratic electro-optic effect.