Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Katuhiko Tokuda0
Kazutomo Kadokura0
Date of Patent
April 3, 2007
Patent Application Number
11038990
Date Filed
January 20, 2005
Patent Primary Examiner
Patent abstract
A polarization inverting region is formed by using a board comprising a single crystal of lithium tatalate of a stoichiometric composition or near to the stoichiometric composition and applying a direct current electric field having an electric field intensity equal to or lower than 5 [kV/mm] for 1 [second] or longer. A periodically poled region can be formed without needing a complicated constitution for applying a pulse voltage or a complicated constitution for applying a strong electric field.
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