-
公开(公告)号：US06738397B2
公开(公告)日：2004-05-18
申请号：US10121705
申请日：2002-04-15
IPC分类号： H01S310
CPC分类号： G02F1/3534 , G02F2203/13
摘要： A solid-state light source apparatus includes a first excitation laser light source for outputting a laser beam of a first wavelength, a second excitation laser light source for outputting a laser beam of a second wavelength, a difference frequency between the laser beam of the first wavelength and the laser beam of the second wavelength being in a terahertz band, and a semiconductor pseudo phase matching device which is disposed at a place where a first optical axis of the laser beam of the first wavelength overlaps with a second optical axis of the laser beam of the second wavelength, and generates a terahertz beam in a direction coaxial with the first and second optical axes on the basis of irradiation of the laser beams of the first and second wavelengths. Thus, high output and high efficiency terahertz wave generation can be easily and certainly realized while a narrow line width characteristic is maintained.
摘要翻译： 固态光源装置包括：第一激发光源，用于输出第一波长的激光;第二激光激光源，其输出第二波长的激光;第二激光激光源， 并且所述第二波长的激光束处于太赫兹波段，以及半导体伪相位匹配装置，其设置在所述第一波长的所述激光束的第一光轴与所述激光的第二光轴重叠的位置处 并且基于第一和第二波长的激光束的照射，在与第一和第二光轴同轴的方向上产生太赫兹光束。 因此，可以容易且可靠地实现高输出和高效率的太赫兹波生成，同时保持窄的线宽特性。
-
公开(公告)号：US07106496B2
公开(公告)日：2006-09-12
申请号：US10480905
申请日：2002-06-14
IPC分类号： G02F1/355
CPC分类号： G02F1/3775
摘要： When forming a periodically-poled structure on a nonlinear optical crystal 1 that permits wavelength conversion and/or optical computing, the group velocity matching conditions are determined to synchronize the group velocity of the incident light L1 with that of the outgoing light L2, and the polarization reversal period of the periodically-poled structure is determined to satisfy quasi-phase matching conditions for the aforementioned wavelength conversion and/or optical computing. As a result, the problems associated with wavelength conversion of the pulsed light due to a difference in the group velocity are suppressed.
摘要翻译： 当在允许波长转换和/或光学计算的非线性光学晶体1上形成周期性极化结构时，确定组速度匹配条件以使入射光L 1的组速度与出射光L 2的组速度同步， 并且确定周期性极化结构的极化反转周期以满足前述波长转换和/或光学计算的准相位匹配条件。 结果，由于组速度的差异而与脉冲光的波长转换有关的问题被抑制。
-
公开(公告)号：US20050063039A1
公开(公告)日：2005-03-24
申请号：US10480905
申请日：2002-06-14
CPC分类号： G02F1/3775
摘要： When forming a periodically-poled structure on a nonlinear optical crystal 1 that permits wavelength conversion and/or optical computing, the group velocity matching conditions are determined to synchronize the group velocity of the incident light L1 with that of the outgoing light L2, and the polarization reversal period of the periodically-poled structure is determined to satisfy quasi-phase matching conditions for the aforementioned wavelength conversion and/or optical computing. As a result, the problems associated with wavelength conversion of the pulsed light due to difference in the group velocity are suppressed pulsed light and a preferable element for wavelength conversion and optical computing can be provided.
摘要翻译： 当在允许波长转换和/或光学计算的非线性光学晶体1上形成周期性极化结构时，确定组速度匹配条件以使入射光L1的组速度与出射光L2的组速度同步， 确定周期极化结构的极化反转周期以满足上述波长转换和/或光学计算的准相位匹配条件。 结果，由于组速度的差异而与脉冲光的波长转换有关的问题被抑制脉冲光，并且可以提供用于波长转换和光学计算的优选元件。
-
公开(公告)号：US08669121B2
公开(公告)日：2014-03-11
申请号：US13066737
申请日：2011-04-22
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 in a desired region of a ferroelectric substrate includes the steps of forming, for the desired region of the surface of the ferroelectric substrate, an electrode pattern or a mask pattern composed of aggregates of micropatterns, and then applying a given voltage into the desired region. The configuration of the micropatterns can be a stripe-shaped pattern, an ellipse-shaped pattern, a hexagon-shaped pattern, a network pattern, or a double cross shaped pattern. The method can further include the steps of generating many nucleuses by using the electrode pattern or the mask pattern composed of the aggregates of micropatterns, forming another electrode pattern or another mask pattern corresponding to the desired region, and then applying a given voltage into the desired region to generate a ferroelectric spontaneous polarization reversal around the nucleuses.
摘要翻译： 在铁电基板的所需区域中形成铁电自发极化反转的方法包括以下步骤：对于铁电体基板的表面的期望区域，形成由微图案的聚集体构成的电极图案或掩模图案，然后 将给定电压施加到所需区域。 微图案的构造可以是条形图案，椭圆形图案，六边形图案，网状图案或双十字形图案。 该方法还可以包括通过使用由微图案的聚集体形成的电极图案或掩模图案，形成另一电极图案或对应于期望区域的另一掩模图案，然后将给定电压施加到期望的 区域以产生围绕核的铁电自发极化反转。
-
公开(公告)号：US08193004B2
公开(公告)日：2012-06-05
申请号：US11083735
申请日：2005-03-18
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 in a desired region of a ferroelectric substrate, wherein thickness of the ferroelectric substrate in the desired region A of the ferroelectric substrate is thinner than in a region B outside the desired region of the substrate, comprising the step of applying a given voltage into the ferroelectric substrate by a liquid electrode method to thereby form a ferroelectric spontaneous polarization reversal in the desired region of the ferroelectric substrate.
摘要翻译： 一种用于在铁电体基板的期望区域形成铁电自发极化反转的方法，其中，强电介质基板的期望区域A中的铁电体基板的厚度比在基板的所需区域外侧的区域B薄， 通过液体电极法将给定电压施加到铁电体衬底中，从而在铁电衬底的所需区域形成铁电自发极化反转的步骤。
-
6.发明申请Wavelength conversion element, wavelength conversion method, phase matching method, and light source device 有权波长转换元件，波长转换方法，相位匹配方法和光源装置公开(公告)号：US20100110534A1
公开(公告)日：2010-05-06
申请号：US12588501
申请日：2009-10-16
申请人： Kenichi Muramatsu , Sunao Kurimura
发明人： Kenichi Muramatsu , Sunao Kurimura
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。
-
7.发明授权Method of inverting polarization by controlling defect density or degree of order of lattice points 有权通过控制缺陷密度或者点阵次序来反转极化的方法公开(公告)号：US07446930B2
公开(公告)日：2008-11-04
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
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。
-
8.发明申请Method of producing quasi phase-matching crytal and quasi phase-matching crystal 有权准相位匹配法和准相位匹配晶体的制备方法公开(公告)号：US20050211155A1
公开(公告)日：2005-09-29
申请号：US10523169
申请日：2003-09-18
申请人： Sunao Kurimura , Masaki Harada
发明人： Sunao Kurimura , Masaki Harada
CPC分类号： G02F1/3558
摘要： Rectangular protruding parts 2 are formed on the surface of one side of a quartz crystal substrate 1; these protruding parts 2 are formed as aggregates of rectangular protruding parts 4 of an even finer pattern. Recessed parts 5 which are lower than the surfaces of the protruding parts 4 are formed between the protruding parts 4; however, the width of these recessed parts 5 is narrow, so that when the protruding parts 4 are viewed on the macroscopic scale, numerous protruding parts 4 are aggregated, and appear to form single protruding parts 2. Such a quartz crystal substrate 1 is clamped between heater blocks from above and below, and the temperature of the quartz crystal substrate is elevated. At the point in time at which this temperature reaches a desired temperature, the substrate 1 is pressed by means of a press. Consequently, stress acts only on the portions corresponding to the protruding parts 4, so that the crystal axis components are inverted only in these portions. These portions with inverted crystal axes grow into the interior portion of the crystal, and are propagated into the interior portion of the crystal, so that the portions corresponding to the protruding parts 4 are connected, thus forming crystal axis inversion regions 6. As a result, crystal axis inversion regions with a desired shape can easily be formed.
摘要翻译： 矩形突出部2形成在石英晶体基板1的一侧的表面上; 这些突出部分2形成为具有更细的图案的矩形突出部分4的聚集体。 在突出部4之间形成有比突出部4的表面低的凹部5; 然而，这些凹部5的宽度窄，因此当在宏观尺度上观察突出部分4时，许多突出部分4聚集，并且看起来形成单个突出部分2。 这样的石英晶体基板1从上下夹持在加热块之间，石英晶体基板的温度升高。 在该温度达到期望温度的时间点，通过压机按压基板1。 因此，应力仅作用于对应于突出部分4的部分，使得晶体轴分量仅在这些部分中反转。 这些具有反转晶轴的部分生长到晶体的内部，并且被传播到晶体的内部，使得与突出部分4相对应的部分被连接，从而形成晶轴反转区域6。 结果，可以容易地形成具有期望形状的晶轴反转区域。
-
公开(公告)号：US20110206860A1
公开(公告)日：2011-08-25
申请号：US13066744
申请日：2011-04-22
IPC分类号： B29C71/04
CPC分类号： G02F1/3558 , Y10T29/4902
摘要： A method for forming a ferroelectric spontaneous polarization reversal includes the steps of forming a convexo-concave structure on a top face of a ferroelectric substrate firstly, and then forming a ferroelectric spontaneous polarization region on the substrate including one portion of a convex portion, with a concave portion being formed on the bottom face of the substrate within a region where a ferroelectric spontaneous polarization reversal is to be formed and the convex portion is formed, and then applying an electric field into the substrate. The depth of the concave portion on the bottom face of the substrate may be greater than the height of the convex portion on the top face of the substrate. The width of the concave portion on the bottom face of the substrate may be wider than width of said convex portion on the top face of the substrate.
摘要翻译： 形成铁电自发极化反转的方法包括以下步骤：首先在铁电体的顶面上形成凸凹结构，然后在包括凸部的一部分的基板上形成铁电自发极化区域， 在要形成铁电自发极化反转的区域和形成凸部的区域中，在基板的底面上形成凹部，然后向基板施加电场。 基板的底面上的凹部的深度可以大于基板的顶面上的凸部的高度。 基板的底面上的凹部的宽度可以比基板的顶面上的凸部的宽度宽。
-
公开(公告)号：US20110197432A1
公开(公告)日：2011-08-18
申请号：US13066737
申请日：2011-04-22
IPC分类号： H01F7/06
CPC分类号： G02F1/3558 , Y10T29/4902
摘要： A method for forming a ferroelectric spontaneous polarization reversal in a desired region of a ferroelectric substrate includes the steps of forming, for the desired region of the surface of the ferroelectric substrate, an electrode pattern or a mask pattern composed of aggregates of micropatterns, and then applying a given voltage into the desired region. The configuration of the micropatterns can be a stripe-shaped pattern, an ellipse-shaped pattern, a hexagon-shaped pattern, a network pattern, or a double cross shaped pattern. The method can further include the steps of generating many nucleuses by using the electrode pattern or the mask pattern composed of the aggregates of micropatterns, forming another electrode pattern or another mask pattern corresponding to the desired region, and then applying a given voltage into the desired region to generate a ferroelectric spontaneous polarization reversal around the nucleuses.
摘要翻译： 在铁电基板的所需区域中形成铁电自发极化反转的方法包括以下步骤：对于铁电体基板的表面的期望区域，形成由微图案的聚集体构成的电极图案或掩模图案，然后 将给定电压施加到所需区域。 微图案的构造可以是条形图案，椭圆形图案，六边形图案，网状图案或双十字形图案。 该方法还可以包括通过使用由微图案的聚集体形成的电极图案或掩模图案，形成另一电极图案或对应于期望区域的另一掩模图案，然后将给定电压施加到期望的 区域以产生围绕核的铁电自发极化反转。
-
-
-
-
-
-
-
-
-
搜索结果
41 条记录 (耗时 0.034 秒)