Lithium niobate crystal wafer, process for the preparation of the same, and method for the evaluation thereof
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United States of America Patent
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Aug 1, 1995
Grant Date -
N/A
app pub date -
Mar 4, 1994
filing date -
Mar 9, 1993
priority date (Note) -
Expired
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Abstract
A lithium niobate crystal wafer wherein the deviations of the maximum and minimum absorption coefficients of the wafer at a wavelength of 2.87 .mu.m from the average absorption coefficient thereof at that wavelength fall within the range of .+-.0.1 cm.sup.-1 exclusive of both borders; a process for the preparation of the same; and a method for the evaluation thereof.
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