Iron-doped lithium niobate single crystal, method for heat treatment thereof and hologram-application element containing the single crystal
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United States of America Patent
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May 18, 1999
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N/A
app pub date -
Jan 2, 1997
filing date -
Jul 30, 1996
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Abstract
An iron-doped lithium niobate single crystal having a molar fraction of Li.sub.2 O/(Nb.sub.2 O.sub.5 +Li.sub.2 O) of from 0.495 to 0.50 which is closer to the stoichiometrical composition than a usual congruent composition, and a high diffraction efficiency by a two light wave mixture.
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