公开(公告)号：US07413430B2

公开(公告)日：2008-08-19

申请号：US10523168

申请日：2003-09-18

申请人： Sunao Kurimura ,  Masaki Harada

发明人： Sunao Kurimura ,  Masaki Harada

IPC分类号： A01J21/00 ,  B29B15/00 ,  G02F2/02 ,  C30B29/18

CPC分类号： C30B33/00 ,  B30B15/068 ,  G02F1/3558

摘要： The upper block 12 contacts the bearing block 20, and the bearing block 20 is coupled to the upper plate 21. The upper block 12 has a protruding part 22 on the upper surface that is worked into a convex surface with a radius of R1, and the bearing block 20 has a recessed part 23 in the undersurface that is worked into a concave surface with a radius of R2 (R2>R1). As a result of such a construction being used, the pressing surface of the upper pressing plate 15 always conforms to the surface of the quartz crystal substrate 11 during pressing, so that a uniform load is applied to the quartz crystal substrate 11. As a result, the surface of the quartz crystal can be uniformly pressed in the hot pressing method.

摘要翻译： 上部块12接触轴承座20，并且轴承座20联接到上部板21。 上部块12在上表面上具有突出部分22，其被加工成半径为R1的凸形表面，并且轴承座20在下表面中具有凹入部分23，其被加工成具有半径为 R 2（R 2> R 1）。 作为这种结构的结果，上压板15的按压面在压制时始终与石英基板11的表面一致，从而对石英晶体基板11施加均匀的载荷。 结果，可以以热压法均匀地压制石英晶体的表面。

公开(公告)号：US07329316B2

公开(公告)日：2008-02-12

申请号：US10795255

申请日：2004-03-09

申请人： Sunao Kurimura ,  Tsuyoshi Yamada

发明人： Sunao Kurimura ,  Tsuyoshi Yamada

IPC分类号： C30B15/14

CPC分类号： G02F1/37 ,  A61B18/20 ,  G02F1/3558

摘要： A manufacturing method for quasi phase matching (QPM) wavelength converter elements using crystal quartz as a base material in which twins are periodically induced, comprises a step of periodically inducing the twins by applying a stress onto a crystal quartz substrate as the base material so that an angle θ of a direction in which the stress is applied relative to a Z axis of the crystal quartz is 60°

摘要翻译： 使用晶体石英作为周期性诱导双胞胎的基础材料的准相位匹配（QPM）波长转换器元件的制造方法包括通过将晶体石英基板作为基材施加应力来周期性地诱导双胞胎的步骤，使得 相对于结晶石英的Z轴施加应力的方向的角度θ为60°<90°。

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。

公开(公告)号：US20070053054A1

公开(公告)日：2007-03-08

申请号：US10575271

申请日：2004-11-10

申请人： Kenji Kitamura ,  Sunao Kurimura ,  Masaru Nakamura ,  Shunji Takekawa ,  Kazuya Terabe ,  Shunichi Hishida ,  Tamaki Shimura

发明人： Kenji Kitamura ,  Sunao Kurimura ,  Masaru Nakamura ,  Shunji Takekawa ,  Kazuya Terabe ,  Shunichi Hishida ,  Tamaki Shimura

IPC分类号： G02F1/35

CPC分类号： G02F1/3558 ,  G02F2202/20

摘要： 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 Dcont1 than the defect density Dferro of a ferroelectric single crystal (Dferro

摘要翻译： 要解决的问题是提供一种在施加电压的可控时间内在铁电单晶中形成短周期的畴反转区域的方法和使用其的光波长转换元件。 其解决方法通过形成（i）具有比铁电单晶（D）的缺陷密度D 更大的缺陷密度D 的控制层来解决该问题 或者形成（ii）具有比铁电单晶的格点的次序小的点阵次数的控制层， 垂直于铁电单晶中的铁电单晶的偏振方向的面。

公开(公告)号：US20050225215A1

公开(公告)日：2005-10-13

申请号：US10523168

申请日：2003-09-18

申请人： Sunao Kurimura ,  Masaki Harada

发明人： Sunao Kurimura ,  Masaki Harada

IPC分类号： C30B29/18 ,  B30B15/06 ,  C30B33/00 ,  H01L41/04 ,  H01L41/18

CPC分类号： C30B33/00 ,  B30B15/068 ,  G02F1/3558

摘要： The upper block 12 contacts the bearing block 20, and the bearing block 20 is coupled to the upper plate 21. The upper block 12 has a protruding part 22 on the upper surface that is worked into a convex surface with a radius of R1, and the bearing block 20 has a recessed part 23 in the undersurface that is worked into a concave surface with a radius of R2 (R2>R1). As a result of such a construction being used, the pressing surface of the upper pressing plate 15 always conforms to the surface of the quartz crystal substrate 11 during pressing, so that a uniform load is applied to the quartz crystal substrate 11. As a result, the surface of the quartz crystal can be uniformly pressed in the hot pressing method.

摘要翻译： 上部块12接触轴承座20，并且轴承座20联接到上部板21。 上部块12在上表面上具有突出部22，其被加工成半径为R1的凸形表面，并且轴承座20在下表面中具有凹入部分23，其被加工成具有半径为 R2（R2> R1）。 作为这种结构的结果，上压板15的按压面在压制时始终与石英基板11的表面一致，从而对石英晶体基板11施加均匀的载荷。 结果，可以以热压法均匀地压制石英晶体的表面。

公开(公告)号：US20050174629A1

公开(公告)日：2005-08-11

申请号：US10522698

申请日：2003-09-18

申请人： Sunao Kurimura ,  Masaki Harada

发明人： Sunao Kurimura ,  Masaki Harada

IPC分类号： G02F1/377 ,  G02F1/35

CPC分类号： G02F1/3544 ,  G02F2001/3509 ,  G02F2201/063

摘要： Two grooves 10 are diced in parallel along the light passage direction in a quartz quasi-phase matching element 1. Consequently, as is shown in (b) and (c), a protruding part 11 which is positioned between the two grooves 10 is formed on the upper surface side (in the figures), and a ridge type waveguide 9 is formed inside this protruding part. Accordingly, if light is caused to pass through this ridge type waveguide 9, the light can be caused to pass through the portions with inverted crystal axes (polarization inversion regions) 4, and can be subjected to a wavelength conversion, in a state in which the light is confined into the ridge type wavelength guide 9. As a result, a state can be produced in which the energy of the light is high inside the wavelength conversion region, so that a high wavelength conversion efficiency can be obtained.

摘要翻译： 在石英准相位匹配元件1中沿着光通道方向平行切割两个凹槽10。 因此，如（b）和（c）所示，在上表面侧（图中）形成有位于两个槽10之间的突出部11，在该突出部 部分。 因此，如果使光通过该脊型波导9，则可以使光通过具有反转晶轴（极化反转区域）4的部分，并且可以在其中进行波长转换，其中 光被限制在脊型波长引导件9中。 结果，可以产生在波长转换区域内光的能量高的状态，从而可以获得高波长转换效率。

公开(公告)号：US08524509B2

公开(公告)日：2013-09-03

申请号：US13066730

申请日：2011-04-22

申请人： Futoshi Yamamoto ,  Junichiro Ichikawa ,  Satoshi Oikawa ,  Sunao Kurimura ,  Kenji Kitamura

发明人： Futoshi Yamamoto ,  Junichiro Ichikawa ,  Satoshi Oikawa ,  Sunao Kurimura ,  Kenji Kitamura

IPC分类号： H01L21/00

CPC分类号： G02F1/3558 ,  Y10T29/4902

摘要： A method for forming a ferroelectric spontaneous polarization reversal, including the steps of forming a concave portion on a top face of a ferroelectric substrate or a bottom face of a ferroelectric substrate, and applying an electric field into the substrate, wherein a ferroelectric spontaneous polarization reversal is formed at least in one portion of a region of the substrate with the concave portion, and wherein the shape of the concave portion is configured such that the width of the concave portion gets narrower gradually toward the inside of the substrate. The method may further include the steps of, after the reversal, making into almost a flat-plane the top or bottom face having the concave portion, and then, forming a new concave portion in another region and applying an electric field to form another reversal in one portion of the region of the substrate having the new concave portion.

摘要翻译： 一种形成铁电自发极化反转的方法，包括以下步骤：在强电介质基板的顶面或铁电基板的底面上形成凹部，并向基板施加电场，其中，铁电自发极化反转 至少在具有凹部的基板的区域的一部分中形成，并且其中凹部的形状被构造成使得凹部的宽度朝向基板的内部逐渐变窄。 该方法还可以包括以下步骤：在反转之后，使具有凹部的顶面或底面几乎成为平面，然后在另一区域形成新的凹部，并施加电场以形成另一反转 在具有新的凹部的基板的区域的一部分中。

公开(公告)号：US08422120B2

公开(公告)日：2013-04-16

申请号：US13571696

申请日：2012-08-10

申请人： Kenichi Muramatsu ,  Sunao Kurimura

发明人： Kenichi Muramatsu ,  Sunao Kurimura

IPC分类号： G02F1/37 ,  G02F1/35

CPC分类号： G02F1/3775 ,  G02F1/3558

摘要： A wavelength conversion element is provided as one including a monocrystalline nonlinear optical crystal. The nonlinear optical crystal has: a plurality of first regions having a polarity direction along a predetermined direction; a plurality of second regions having a polarity direction opposite to the predetermined direction; an entrance face into which a fundamental incident wave having a wavelength λ and a frequency ω is incident in a direction substantially perpendicular to the predetermined direction; and an exit face from which a second harmonic with a frequency 2ω generated in the crystal emerges. The plurality of first and second regions are formed as alternately arranged in a period substantially equal to d expressed by a predetermined expression, between the entrance face and the exit face.

摘要翻译： 波长转换元件被提供为包括单晶非线性光学晶体的波长转换元件。 非线性光学晶体具有：沿预定方向具有极性方向的多个第一区域; 具有与所述预定方向相反的极性方向的多个第二区域; 入射面，其中具有波长λ和频率ω的基波入射波入射到基本上垂直于预定方向的方向; 并且出现在晶体中产生具有频率2ω的二次谐波的出射面。 多个第一和第二区域形成为在入射面和出射面之间以基本上等于由预定表达式表示的d的周期交替布置。

公开(公告)号：US07260280B2

公开(公告)日：2007-08-21

申请号：US11500043

申请日：2006-08-07

申请人： Masayuki Ichioka ,  Junichiro Ichikawa ,  Sunao Kurimura ,  Kenji Kitamura

发明人： Masayuki Ichioka ,  Junichiro Ichikawa ,  Sunao Kurimura ,  Kenji Kitamura

IPC分类号： G02F1/295

CPC分类号： G02F1/035 ,  G02F1/0356 ,  G02F1/055 ,  G02F1/21 ,  G02F1/225 ,  G02F2201/34

摘要： The present invention provides a highly-integrated and compact optical element and further provides an optical element having various functions such as lower driving voltage, chirping suppression and polarization-independency. The optical element has a substrate 1 formed of a material having an electrooptic effect, a plurality of optical waveguides formed on the substrate, and a modulating electrode for applying electric field into the optical waveguides, and is characterized in that the modulating electrode has at least two branching and confluence lines on the same line for applying the same modulating signal into different optical waveguides.

摘要翻译： 本发明提供高度集成且紧凑的光学元件，并且还提供具有各种功能的光学元件，例如较低的驱动电压，啁啾抑制和极化独立性。 光学元件具有由具有电光效应的材料形成的基板1，形成在基板上的多个光波导和用于向光波导施加电场的调制电极，其特征在于，所述调制电极至少具有 在同一条线上的两个分支和汇流线将相同的调制信号施加到不同的光波导中。

公开(公告)号：US20050271313A1

公开(公告)日：2005-12-08

申请号：US11089895

申请日：2005-03-25

申请人： Satoshi Oikawa ,  Masayuki Ichioka ,  Junichiro Ichikawa ,  Futoshi Yamamoto ,  Sunao Kurimura ,  Kenji Kitamura

发明人： Satoshi Oikawa ,  Masayuki Ichioka ,  Junichiro Ichikawa ,  Futoshi Yamamoto ,  Sunao Kurimura ,  Kenji Kitamura

IPC分类号： G02F1/035 ,  G02F1/055 ,  G02F1/21 ,  G02F1/225

CPC分类号： G02F1/035 ,  G02F1/0356 ,  G02F1/055 ,  G02F1/21 ,  G02F1/225 ,  G02F2201/34

摘要： The present invention provides a highly-integrated and compact optical element and further provides an optical element having various functions such as lower driving voltage, chirping suppression and polarization-independency. The optical element comprising a substrate 1 consisting of a material having an electrooptic effect, top optical waveguides 2-1 an 2-2 formed on the top face of said substrate, bottom optical waveguides formed on the bottom face of said substrate, a top modulating electrode for controlling the phase of a light wave being propagated through said top optical waveguide, and a bottom modulating electrode for controlling the phase of a light wave being propagated through said bottom optical waveguide, is characterized in that at least one side edge of said substrate comprises output and input of said optical waveguides formed on said top and bottom faces, and a turnback element is located adjacent to said one side edge to guide the light wave from said output to said input.

摘要翻译： 本发明提供高度集成且紧凑的光学元件，并且还提供具有各种功能的光学元件，例如较低的驱动电压，啁啾抑制和极化独立性。 该光学元件包括由具有电光效应的材料构成的衬底1，形成在所述衬底的顶面上的顶部光波导2-1和2 - 2，形成在所述衬底的底面上的底部光波导，顶部调制 用于控制通过所述顶部光波导传播的光波的相位的电极和用于控制通过所述底部光波导传播的光波的相位的底部调制电极，其特征在于，所述基板的至少一个侧边缘 包括形成在所述顶面和底面上的所述光波导的输出和输入，并且转向元件位于所述一个侧边缘附近，以将光波从所述输出引导到所述输入。