Title:
POLARIZATION INVERTING METHOD USING DEFECT DENSITY CONTROL OR LATTICE POINT ORDER CONTROL, AND LIGHT WAVELENGTH CONVERSION ELEMENT
Document Type and Number:
WIPO Patent Application WO/2005/047969
Kind Code:
A1
Abstract:
There is provided a method for forming a short-cycle polarization inverting region in a ferroelectric single crystal within a controllable voltage application time. A light wavelength conversion element using the method is also provided. The aforementioned is achieved by (i) forming a control layer having a defect density Dcontl greater than the defect density Dferro of the ferroelectric single crystal (Dferro < Dcontl) or (ii) forming a control layer having an order lower than the order of the lattice point of the ferroelectric single crystal on one of the planes vertical to the polarization direction of the ferroelectric single crystal with respect to the ferroelectric single crystal.
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Inventors:
KITAMURA KENJI (JP)
KURIMURA SUNAO (JP)
NAKAMURA MASARU (JP)
TAKEKAWA SHUNJI (JP)
TERABE KAZUYA (JP)
HISHITA SHUNICHI (JP)
SHIMURA TAMAKI (JP)
KURIMURA SUNAO (JP)
NAKAMURA MASARU (JP)
TAKEKAWA SHUNJI (JP)
TERABE KAZUYA (JP)
HISHITA SHUNICHI (JP)
SHIMURA TAMAKI (JP)
Application Number:
PCT/JP2004/017029
Publication Date:
May 26, 2005
Filing Date:
November 10, 2004
Export Citation:
Assignee:
NAT INST FOR MATERIALS SCIENCE (JP)
KITAMURA KENJI (JP)
KURIMURA SUNAO (JP)
NAKAMURA MASARU (JP)
TAKEKAWA SHUNJI (JP)
TERABE KAZUYA (JP)
HISHITA SHUNICHI (JP)
SHIMURA TAMAKI (JP)
KITAMURA KENJI (JP)
KURIMURA SUNAO (JP)
NAKAMURA MASARU (JP)
TAKEKAWA SHUNJI (JP)
TERABE KAZUYA (JP)
HISHITA SHUNICHI (JP)
SHIMURA TAMAKI (JP)
International Classes:
G02F1/355; (IPC1-7): G02F1/37
Foreign References:
| US6542285B1 | 2003-04-01 |
Other References:
CHEN Y. ET AL: "Effect of Li diffusion on the domain inversion of LiNb03 prepared by vapor transport equilibration", APPL.PHYS.LETT., vol. 81, no. 4, 2002, pages 700 - 702, XP012033063
KIM S. ET AL: "Domain reversal and nonsoi chiometry in lithium tantalate", J.APPL.PHYS., vol. 90, no. 6, 2001, pages 2949 - 2963, XP012054160
SEKI H. ET AL: "Selective Nucleation Control in Periodical Poling of LiNb03", TECHNICAL REPORT OF IEICE, OPE2002-40, LQE2002-95, 2002, pages 19 - 22, XP002998416
PENG L.-H. ET AL: "Mitigration of transverse domain growth in two-dimensional polarization switching of lithium niobate", APPL.PHYS.LETT., vol. 81, no. 27, 2002, pages 5210 - 5212, XP012032944
See also references of EP 1684112A4
KIM S. ET AL: "Domain reversal and nonsoi chiometry in lithium tantalate", J.APPL.PHYS., vol. 90, no. 6, 2001, pages 2949 - 2963, XP012054160
SEKI H. ET AL: "Selective Nucleation Control in Periodical Poling of LiNb03", TECHNICAL REPORT OF IEICE, OPE2002-40, LQE2002-95, 2002, pages 19 - 22, XP002998416
PENG L.-H. ET AL: "Mitigration of transverse domain growth in two-dimensional polarization switching of lithium niobate", APPL.PHYS.LETT., vol. 81, no. 27, 2002, pages 5210 - 5212, XP012032944
See also references of EP 1684112A4
Attorney, Agent or Firm:
Moritake, Yoshiaki (Kita-yaesu Bldg. 3rd Floor 2-1, Nihonbashi 3-Chome Chuo-Ku Ibaraki 27, JP)
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