METHOD FOR MANUFACTURING A PERIODICALLY-POLED STRUCTURE
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United States of America Patent
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Issued Date -
Jan 22, 2009
app pub date -
Mar 17, 2006
filing date -
Mar 18, 2005
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Abandoned
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Abstract
The present invention provides a periodically-poled structure with high conversion efficiency and improved manufacturing yield. The method for manufacturing a periodically-poled structure in a second order nonlinear optical crystal having a single domain structure (31) includes the steps of forming a resist pattern (32) which matches a polarization-inverted period on a -Z surface of the second order nonlinear optical crystal (31), and applying voltage to the -Z surface as a negative voltage where the resist pattern (32) is formed, and a +Z surface as a positive voltage so as to apply an electric field in the second order nonlinear optical crystal (31), wherein the second order nonlinear optical crystal (31) contains at least one element as a dopant which compensate for the crystal defects.
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