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    Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element
    2.
    发明申请
    Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element 失效
    具有多光栅的波长转换元件和使用所述元件的发光装置，以及具有圆柱形铁电单晶体的波长转换元件和使用所述元件的发光装置

    公开(公告)号：US20070127107A1

    公开(公告)日：2007-06-07

    申请号：US10575535

    申请日：2004-11-19

    申请人： Kenji Kitamura ,  Sunao Kurimura ,  Masaru Nakamura ,  Shunji Takekawa

    发明人： Kenji Kitamura ,  Sunao Kurimura ,  Masaru Nakamura ,  Shunji Takekawa

    IPC分类号： G02B26/00 ,  G02F1/00 ,  G02F1/01

    CPC分类号： G02F1/37 ,  G02F2001/3507 ,  G02F2001/3548 ,  G02F2202/20

    摘要： A wavelength conversion element having multi-gratings free from damage propagation and a light generating apparatus using it, and a wavelength conversion element having multi-gratings to make a thermal distribution centrosymmetric, and being free from damage propagation, are provided. The wavelength conversion element is realized by comprising a holder and plural prismatic ferroelectric single crystals disposed in the holder, wherein plural prismatic ferroelectric single crystals have at least five planes; the aspect ratios of planes perpendicular to respective longitudinal directions of the plural prismatic ferroelectric single crystals are virtually unity; and each of the plural prismatic ferroelectric single crystals has a domain inversion structure with a predetermined period in the direction perpendicular to the polarization direction thereof, and is arranged in a way that said direction perpendicular to the polarization direction is the same as those of the other crystals. In addition, the element is realized by selecting ferroelectric material from a group comprising lithium niobate, lithium tantalate, impurity-doped lithium niobate, and impurity-doped lithium tantalate, each with virtually stoichiometric composition, and processing it into the cylindrical ferroelectric single crystal with a virtually completely round cross-section.

    摘要翻译： 提供了具有不受损伤传播的多光栅的波长转换元件和使用它的发光装置，以及具有多光栅以实现热分布中心对称，并且没有损伤传播的波长转换元件。 波长转换元件通过包括保持器和设置在保持器中的多个棱柱铁电单晶实现，其中多个棱柱铁电单晶具有至少五个平面; 垂直于多个棱柱铁电单晶的纵向方向的平面的纵横比实际上是一致的; 并且多个棱柱铁电单晶中的每一个具有在垂直于其偏振方向的方向上具有预定周期的畴反转结构，并且以与偏振方向垂直的方向与其他方向相同的方式 晶体。 此外，该元件通过从包含铌酸锂，钽酸锂，杂质掺杂的铌酸锂和杂质掺杂的钽酸锂的组中选择铁电材料来实现，每个具有实质上的化学计量组成，并且将其加工成圆柱形铁电单晶， 一个几乎完全圆形的横截面。

    Optical device and method of manufacturing the same
    4.
    发明授权
    Optical device and method of manufacturing the same 有权
    光学装置及其制造方法

    公开(公告)号：US07985294B2

    公开(公告)日：2011-07-26

    申请号：US11367261

    申请日：2006-03-03

    申请人： Futoshi Yamamoto ,  Katsutoshi Kondou ,  Junichiro Ichikawa ,  Masaru Nakamura ,  Sunao Kurimura ,  Shunji Takekawa ,  Kenji Kitamura

    发明人： Futoshi Yamamoto ,  Katsutoshi Kondou ,  Junichiro Ichikawa ,  Masaru Nakamura ,  Sunao Kurimura ,  Shunji Takekawa ,  Kenji Kitamura

    IPC分类号： C30B29/30

    CPC分类号： G02B6/1342

    摘要： An optical device and a method of manufacturing the optical device, with the method including the steps of forming a dopant layer on a stoichiometric lithium niobate single crystal substrate with Li to Nb mole composition ratio of 49.5% to 50.5%, and diffusing a dopant in the dopant layer into at least a portion of the stoichiometric lithium niobate single crystal substrate. The stoichiometric lithium niobate single crystal substrate includes 0.5 to 5 mol % of Mg. In the diffusing step, a heat treatment is performed at a diffusion temperature of 1000° C. to 1200° C. for a diffusion time of 3 hours to 24 hours in a dry atmosphere of at least one of O2, N2, Ar and He gas having a dew-point temperature of −35° C. or less.

    摘要翻译： 一种光学器件和光学器件的制造方法，其特征在于包括以下步骤：在化学计量比的铌酸锂单晶衬底上形成掺杂剂层，其中Li与Nb的摩尔组成比为49.5％至50.5％，并将掺杂剂扩散到 该掺杂剂层至少部分化学计量的铌酸锂单晶衬底。 化学计量的铌酸锂单晶衬底包含0.5-5mol％的Mg。 在扩散步骤中，在O2，N2，Ar和He中的至少一种的干燥气氛中，在1000℃至1200℃的扩散温度下进行3小时至24小时的扩散时间的热处理 露点温度为-35℃以下的气体。

    Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element
    5.
    发明授权
    Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element 失效
    具有多光栅的波长转换元件和使用所述元件的发光装置，以及具有圆柱形铁电单晶体的波长转换元件和使用所述元件的发光装置

    公开(公告)号：US07403327B2

    公开(公告)日：2008-07-22

    申请号：US10575535

    申请日：2004-11-19

    申请人： Kenji Kitamura ,  Sunao Kurimura ,  Masaru Nakamura ,  Shunji Takekawa

    发明人： Kenji Kitamura ,  Sunao Kurimura ,  Masaru Nakamura ,  Shunji Takekawa

    IPC分类号： G02F1/35

    CPC分类号： G02F1/37 ,  G02F2001/3507 ,  G02F2001/3548 ,  G02F2202/20

    摘要： A wavelength conversion element having multi-gratings free from damage propagation and a light generating apparatus using it, and a wavelength conversion element having multi-gratings to make a thermal distribution centrosymmetric, and being free from damage propagation, are provided. The wavelength conversion element is realized by comprising a holder and plural prismatic ferroelectric single crystals disposed in the holder, wherein plural prismatic ferroelectric single crystals have at least five planes; the aspect ratios of planes perpendicular to respective longitudinal directions of the plural prismatic ferroelectric single crystals are virtually unity; and each of the plural prismatic ferroelectric single crystals has a domain inversion structure with a predetermined period in the direction perpendicular to the polarization direction thereof, and is arranged in a way that said direction perpendicular to the polarization direction is the same as those of the other crystals.

    摘要翻译： 提供了具有不受损伤传播的多光栅的波长转换元件和使用它的发光装置，以及具有多光栅以实现热分布中心对称，并且没有损伤传播的波长转换元件。 波长转换元件通过包括保持器和设置在保持器中的多个棱柱铁电单晶实现，其中多个棱柱铁电单晶具有至少五个平面; 垂直于多个棱柱铁电单晶的纵向方向的平面的纵横比实际上是一致的; 并且多个棱柱铁电单晶中的每一个具有在垂直于其偏振方向的方向上具有预定周期的畴反转结构，并且以与偏振方向垂直的方向与其他方向相同的方式 晶体。

    Optical device and method of manufacturing the same
    6.
    发明申请
    Optical device and method of manufacturing the same 有权
    光学装置及其制造方法

    公开(公告)号：US20070014014A1

    公开(公告)日：2007-01-18

    申请号：US11367261

    申请日：2006-03-03

    申请人： Futoshi Yamamoto ,  Katsutoshi Kondou ,  Junichiro Ichikawa ,  Masaru Nakamura ,  Sunao Kurimura ,  Shunji Takekawa ,  Kenji Kitamura

    发明人： Futoshi Yamamoto ,  Katsutoshi Kondou ,  Junichiro Ichikawa ,  Masaru Nakamura ,  Sunao Kurimura ,  Shunji Takekawa ,  Kenji Kitamura

    IPC分类号： G02B5/18 ,  G02B27/44

    CPC分类号： G02B6/1342

    摘要： An object of the present invention is to provide an optical device having high quality, excellent productivity and optical characteristics, and capable of suppressing a refractive index of a substrate surface from increasing when a dopant is thermally diffused into, or a heat treatment is performed in order to compensate of process distortion in stoichiometric lithium niobate crystal or a crystal substrate in which Mg is doped into the crystal, and a method of manufacturing the same. According to the present invention, there is provided a method of manufacturing an optical device including the steps of: forming a dopant layer on a substantial stoichiometric lithium niobate single crystal substrate; and diffusing a dopant in the dopant layer into at least a portion of the substantial stoichiometric lithium niobate single crystal substrate, wherein, in the diffusing step, a heat treatment is performed at a diffusion temperature of 1000° C. to 1200° C. in an atmosphere in which a gas having a dew-point temperature of 0° C. or less is introduced, preferably for a diffusion time of 3 hours or more, and more preferably 3 hours to 24 hours.

    摘要翻译： 本发明的目的是提供一种具有高质量，优异的生产率和光学特性的光学器件，并且能够抑制当掺杂剂热扩散时衬底表面的折射率增加，或者在 为了补偿化学计量比的铌酸锂晶体或其中Mg掺杂到晶体中的晶体衬底的工艺失真及其制造方法。 根据本发明，提供了一种制造光学器件的方法，包括以下步骤：在基本上化学计量的铌酸锂单晶衬底上形成掺杂剂层; 并且将掺杂剂层中的掺杂剂扩散到至少一部分实质上的化学计量的铌酸锂单晶衬底中，其中在扩散步骤中，在1000℃至1200℃的扩散温度下进行热处理 引入露点温度为0℃以下的气体的气氛，优选扩散时间为3小时以上，更优选为3小时〜24小时。

    Optically functional device, single crystal substrate for the device and method for its use
    8.
    发明授权
    Optically functional device, single crystal substrate for the device and method for its use 有权
    光功能器件，单晶衬底的器件及其使用方法

    公开(公告)号：US06747787B2

    公开(公告)日：2004-06-08

    申请号：US09797596

    申请日：2001-03-05

    申请人： Yasunori Furukawa ,  Kenji Kitamura ,  Shunji Takekawa ,  Masaru Nakamura

    发明人： Yasunori Furukawa ,  Kenji Kitamura ,  Shunji Takekawa ,  Masaru Nakamura

    IPC分类号： G02F1355

    CPC分类号： G02F1/0027 ,  G02F1/292 ,  G02F1/3534 ,  G02F1/3558 ,  G02F1/3775 ,  G02F1/39 ,  G02F2202/20

    摘要： An optically functional device comprising a ferroelectric single crystal substrate and polarization-inverted structures formed at portions of the substrate at a temperature of not higher than the Curie temperature by an electron beam scanning irradiation method or a voltage application method and designed to control light passed through the polarization-inverted portions, wherein a LiNbO3 crystal having a molar ratio of Li/Nb within a range of from 0.95 to 1.01, is used as the substrate, so that the propagation loss of light passed through the polarization-inverted portions immediately after formation of the polarization-inverted structures, is not more than 2%.

    摘要翻译： 一种光功能元件，其特征在于，具有强电介质单晶基板和通过电子束扫描照射法或电压施加方法在不高于居里温度的温度下在基板的部分形成的偏振反转结构，并设计成控制通过的光 使用其中Li / Nb的摩尔比在0.95〜1.01的范围内的LiNbO 3晶体作为基板，使得在形成之后立即通过偏振反转部分的光的传播损耗为偏振反转部分 的极化反转结构不大于2％。