METHOD FOR MANUFACTURING WAVELENGTH CONVERSION ELEMENT
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United States of America Patent
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Issued Date -
Jun 21, 2012
app pub date -
Aug 6, 2010
filing date -
Aug 28, 2009
priority date (Note) -
Abandoned
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Abstract
Provided is a method for manufacturing a wavelength conversion element 3 for converting a fundamental wave into a second harmonic wave, the method including the aging step (step 4) of irradiating a nonlinear optical crystal substrate 1 with a first light beam 4 having the same wavelength as the fundamental wave until the amount of variation per unit time in the phase matching temperature becomes a predetermined reference value or smaller while keeping the temperature of the nonlinear optical crystal substrate 1 at around the phase matching temperature after forming a periodical polarization-reversed structure in the nonlinear optical crystal substrate 1 (step 2).
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