Method of inverting polarization by controlling defect...

Details Method of inverting polarization by controlling defect... Method of inverting polarization by controlling defect...

2004-11-10

2008-11-04

Pak, Sung (Department: 2874)

Optical: systems and elements

Optical frequency converter

C385S122000, C372S021000, C372S022000, C361S225000, C204S157150, C204S164000

Reexamination Certificate

active

07446930

ABSTRACT:
A problem to be solved is to provide a method of forming domain inverted regions of short period in a ferroelectric single crystal in a controllable time period of application of voltage and an optical wavelength conversion element using the same.A solving means of it solves the problem by forming (i) a control layer having a larger defect density Dcont1than the defect density Dferroof a ferroelectric single crystal (Dferro<Dcont1) or forming (ii) a control layer having a lower degree of order of lattice points than the degree of order of lattice points of the ferroelectric single crystal on a face perpendicular to the direction of polarization of the ferroelectric single crystal in the ferroelectric single crystal.

REFERENCES:
patent: 5380410 (1995-01-01), Sawaki et al.
patent: 5652674 (1997-07-01), Mizuuchi et al.
patent: 5875053 (1999-02-01), Webjorn et al.
patent: 6002515 (1999-12-01), Mizuuchi et al.
patent: 6353495 (2002-03-01), Mizuuchi et al.
patent: 6542285 (2003-04-01), Batchko et al.

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