Abstract
The holographic storage properties of potassium tantalate niobate (KTN) single crystals have been deduced from photoelectric measurements employing incoherent light. The light energy density necessary to record an elementary volume phase grating with a 1% read-out efficiency was found to be of the order of 100 ..mu..J/cm/sup 2/ for KTN is either the ferroelectric or nonferroelectric phase. These results compare favorably with those reported for other electro-optic materials. Dark storage times of up to one year were found for the most sensitive KTN crystals.
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