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1.发明授权
公开(公告)号：US5191624A
公开(公告)日：1993-03-02
申请号：US762935
申请日：1991-09-19
申请人： Kenchi Ito , Kazumi Kawamoto , Naoya Kanda , Yasuo Hira , Hidemi Sato , Atsuko Fukushima , Masataka Shiba , Akira Inagaki , Minoru Yoshida
发明人： Kenchi Ito , Kazumi Kawamoto , Naoya Kanda , Yasuo Hira , Hidemi Sato , Atsuko Fukushima , Masataka Shiba , Akira Inagaki , Minoru Yoshida
CPC分类号： G02B6/12004 , G02F1/335 , G11B7/1245
摘要： An optical waveguide is comprised of an optical substrate and an optical thin-film optical waveguide layer and formed such that ##EQU1## where .theta. is an output angle, n.sub.o1 is an ordinary refractive index of the optical substrate for an ordinary beam, n.sub.e1 is an extraordinary refractive index of the optical substrate for an extraordinary beam, n.sub.o2 is an ordinary refractive index of the optical thin-film optical waveguide layer for the ordinary beam and n.sub.e2 is an extraordinary refractive index of the optical thin-film optical waveguide layer for the extraordinary beam, and an electrode for generating a surface acoustic wave for diffracting light is formed on the optical waveguide to construct a collinear optical deflector. A method for production of the optical thin-film optical waveguide layer is exemplified wherein a target made of tantalic lilthium niobate or tantalic lithium niobate magnesium and an optical substrate made of lithium tantalate are prepared and an optical thin-film optical waveguide layer having a composition of tantalic lithium niobate or tantalic lithium niobate magnesium is formed on the optical substrate through an ion beam sputtering process into which oxygen can be introduced. Proton substitutes for part of an element constituting the optical thin-film optical waveguide layer.
摘要翻译： 光波导包括光学基板和光学薄膜光波导层，并且被形成为使得θ是输出角度的θIMA1是普通光束的光学基板的普通折射率，ne1是 用于非常光束的光学基板的非常折射率，no2是普通光束的光学薄膜光波导层的普通折射率，ne2是非常优异的光学薄膜光波导层的非常折射率 并且在光波导上形成用于产生用于衍射光的表面声波的电极，以构成共线的光学偏转器。 制备光学薄膜光波导层的方法被制备，其中制备由钽酸铌酸锂或钽酸铌镁制成的靶和由钽酸锂制成的光学衬底，并且制备具有组成的光学薄膜光波导层 通过可以引入氧气的离子束溅射工艺在光学基板上形成铌酸锂或钽酸铌酸镁。 质子代替构成光学薄膜光波导层的元件的一部分。
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公开(公告)号：US5195070A
公开(公告)日：1993-03-16
申请号：US551794
申请日：1990-07-12
申请人： Masataka Shiba , Kazumi Kawamoto , Yasuo Hira , Akira Inagaki , Hidemi Sato , Kenchi Ito , Atsuko Fukushima , Ryuichi Funatsu
发明人： Masataka Shiba , Kazumi Kawamoto , Yasuo Hira , Akira Inagaki , Hidemi Sato , Kenchi Ito , Atsuko Fukushima , Ryuichi Funatsu
CPC分类号： G11B7/131 , G11B7/0903 , G11B7/1245 , G11B7/127 , G11B7/14
摘要： Using an optical pickup, recording/reproducing of information is performed by irradiating light beams to an optical recording medium to form light spots. The optical pickup includes means for generating plural light beams, an optical waveguide for guiding the plural light beams in a row into a flat space, and a light deflecting element for deflecting the light beams, which run in the optical waveguide, within a plane formed by a vector perpendicular to a plane of the optical waveguide and a directional vector of the light beams. The light deflecting element deflects the plural light spots, which are to be arranged in a row, in a direction perpendicular to the light spot row to perform micro seek.
摘要翻译： 使用光学拾取器，通过将光束照射到光学记录介质以形成光斑来进行信息的记录/再现。 光拾取器包括用于产生多个光束的装置，用于将多个光束一行地引导到平坦空间中的光波导和用于使在光波导中延伸的光束偏转在形成的平面内的光偏转元件 通过垂直于光波导的平面的矢量和光束的方向矢量。 光偏转元件在垂直于光点行的方向上偏转排列成一列的多个光点，以执行微寻迹。
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公开(公告)号：US5070488A
公开(公告)日：1991-12-03
申请号：US372639
申请日：1989-06-28
申请人： Atsuko Fukushima , Yasuo Hira , Hidemi Sato , Kazumi Kawamoto , Kenchi Ito , Masataka Shiba , Akira Arimoto
发明人： Atsuko Fukushima , Yasuo Hira , Hidemi Sato , Kazumi Kawamoto , Kenchi Ito , Masataka Shiba , Akira Arimoto
CPC分类号： G02B6/4246 , G02B6/124 , G02B6/34 , G02B6/42 , G02F1/335 , G11B7/1245 , G11B7/125 , G11B7/1384
摘要： An optical integrated circuit and an optical apparatus used in optical communication or an opto-electronics apparatus such as an optical disk recording apparatus, in which various kinds of aberration caused by wavelength variation of a light source when a semiconductor laser is used as the light source. An aberration correcting grating having such grating pitches as to nearly satisfy the Bragg condition preferably with respect to a certain wavelength of the semiconductor laser beam is used. As a result, lowering of incidence (entrance) and radiation (exit) coupling efficiencies of the grating coupler and aberration such as chromatic aberration can be prevented. Even if a multi-mode semiconductor laser is used as a light source, the characteristics of the optical integrated circuit and optical apparatus do not vary largely.
摘要翻译： 在光通信中使用的光集成电路和光学装置或光电记录装置等光电装置，其中当使用半导体激光器作为光源时，由光源的波长变化引起的各种像差 。 使用具有这样的光栅间距几乎满足布拉格条件的像差校正光栅，优选地相对于半导体激光束的特定波长。 结果，可以防止光栅耦合器的入射（入射）和辐射（出射）耦合效率的降低以及像差等像差。 即使使用多模式半导体激光器作为光源，光集成电路和光学装置的特性也不会很大变化。
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公开(公告)号：US5274727A
公开(公告)日：1993-12-28
申请号：US879361
申请日：1992-05-07
申请人： Kenchi Ito , Kazumi Kawamoto , Hiroshi Momiji , Yasuo Hira , Hidemi Sato , Atsuko Fukushima
发明人： Kenchi Ito , Kazumi Kawamoto , Hiroshi Momiji , Yasuo Hira , Hidemi Sato , Atsuko Fukushima
CPC分类号： G02F1/3775
摘要： A second harmonic generator having a wide acceptance of bandwidth of temperature and/or a high conversion efficiency and a method of fabrication thereof are disclosed. An equidistant arrangement of pole-inverted grating having a rectangular sectional profile and the direction of spontaneous polarization opposite to that of a substrate within an optical waveguide has been known to produce a high conversion efficiency of the second harmonic generator A second harmonic generator having such a structure, which has so far been impossible to fabricate, is formed utilizing the liquid-phase epitaxial method and the ion-implanting method. Further, the substrate and the optical waveguide are formed of the same type of material. The temperature coefficient of the refractive index in the direction perpendicular to the substrate surface is rendered substantially equal to that of the optical waveguide, thereby improving the acceptance of bandwidth of temperature and making possible practical applications of the second harmonic generator.
摘要翻译： 公开了具有对温度带宽的广泛接受和/或高转换效率的二次谐波发生器及其制造方法。 已知具有矩形截面轮廓和与光波导内的衬底相反的自发极化方向的等反转光栅的等距布置产生二次谐波发生器A的高转换效率二次谐波发生器具有这样的 使用液相外延法和离子注入法形成迄今为止不可能制造的结构。 此外，基板和光波导由相同类型的材料形成。 使与基板表面垂直的方向的折射率的温度系数基本上等于光波导的温度系数，从而提高了温度带宽的接受性，并且可以实现二次谐波发生器的实际应用。
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5.发明授权Method and apparatus for measuring optical constants of a thin film as well as method and apparatus for fabricating a thin film utilizing same 失效用于测量薄膜的光学常数的方法和装置以及利用其制造薄膜的方法和装置
公开(公告)号：US5125740A
公开(公告)日：1992-06-30
申请号：US480649
申请日：1990-02-15
申请人： Hidemi Sato , Yasuo Hira , Atsuko Fukushima , Hiroshi Asao , Kazumi Kawamoto , Kenchi Ito , Ryuichi Funatsu
发明人： Hidemi Sato , Yasuo Hira , Atsuko Fukushima , Hiroshi Asao , Kazumi Kawamoto , Kenchi Ito , Ryuichi Funatsu
CPC分类号： G01N21/43 , G01N21/8422 , G01N2021/4126 , G01N21/412 , G01N21/552
摘要： A sample is located so as to be close to a prism and a light beam coming from a light source is projected to the prism while varying the incident angle to the prism as a parameter. The incident light beam to the prism is propagated therein and light emerging from the bottom surface of the prism, which is in contact with the sample, is projected to the sample. At the same time the intensity of light reflected by the bottom surface of the prism is measured. Optical constants such as the refractive index, the film thickness, the distribution of the refractive index, etc. are obtained by calculation, starting from measured values thus obtained.
摘要翻译： 将样品定位成靠近棱镜，并且来自光源的光束作为参数改变与棱镜的入射角度而投射到棱镜。 到棱镜的入射光束在其中传播，并且从与样品接触的棱镜的底表面出射的光被投射到样品。 同时测量由棱镜底面反射的光的强度。 光学常数如折射率，膜厚度，折射率分布等通过计算得到，从所获得的测量值开始。
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公开(公告)号：US5187756A
公开(公告)日：1993-02-16
申请号：US758608
申请日：1991-09-12
申请人： Masataka Shiba , Akira Inagaki , Minoru Yoshida , Kenchi Ito , Kazumi Kawamoto
发明人： Masataka Shiba , Akira Inagaki , Minoru Yoshida , Kenchi Ito , Kazumi Kawamoto
CPC分类号： G02F1/125
摘要： The present invention relates to a surface acoustic wave element comprising a substrate, an optical waveguide layer formed on the aforesaid substrate to guide laser light from a laser light source, a surface acoustic wave portion for deflecting or modulating the laser light traveling through the aforesaid optical waveguide layer, a comb-shaped SAW electrode provided on the aforesaid optical waveguide layer to cause the aforesaid surface acoustic wave portion to generate surface acoustic wave, and a terminal provided on the aforesaid optical waveguide layer and connected to the aforesaid SAW electrode to apply a high-frequency alternating voltage thereto, wherein a protection cover is bonded by a viscoelastic adhesive having a refractive index smaller than that of the aforesaid optical waveguide layer to cover the aforesaid SAW electrode and surface acoustic wave portion with air space in such a manner that the aforesaid terminal is positioned outside thereof, and the manufacturing method of the surface acoustic wave element.
摘要翻译： 本发明涉及一种弹性表面波元件，包括基板，形成在上述基板上的用于引导来自激光光源的激光的光波导层，用于偏转或调制通过前述光学器件行进的激光的表面声波部分 波导层，设置在上述光波导层上的梳形SAW电极，使上述声表面波部分产生声表面波;以及端子，设置在上述光波导层上，并与上述SAW电极连接， 高频交流电压，其中保护盖通过具有比上述光波导层的折射率小的折射率的粘弹性粘合剂粘结，以覆盖上述SAW电极和具有空气空间的表面声波部分，使得 上述端子位于其外侧， 声表面波元件。
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公开(公告)号：US5854870A
公开(公告)日：1998-12-29
申请号：US027724
申请日：1993-03-04
申请人： Sten Helmfrid , Kenchi Ito , Kimio Tatsuno , Kazumi Kawamoto , Tetsuo Andou , Hiroshi Momiji , Osamu Komoda , Hisao Kurosawa , Masayoshi Sato , Fumio Nitanda , Kohei Ito
发明人： Sten Helmfrid , Kenchi Ito , Kimio Tatsuno , Kazumi Kawamoto , Tetsuo Andou , Hiroshi Momiji , Osamu Komoda , Hisao Kurosawa , Masayoshi Sato , Fumio Nitanda , Kohei Ito
CPC分类号： G02F1/3775 , G02F1/377 , G11B7/127 , G02F1/37 , G02F2001/3546 , H01S5/0092 , H01S5/02248 , H01S5/02288 , H01S5/141
摘要： There is disclosed a harmonic modulation device of waveguide type including a semiconductor laser, a waveguide for generating a nonlinear optical harmonic of the semiconductor laser by keeping phase matching, means for leading an optical beam of the semiconductor laser to the waveguide, electrodes disposed on the waveguide, and means for modulating a refractive index of the waveguide electro-optically to modulate a phase matching condition and thereby modulate an intensity of the harmonic.
摘要翻译： 公开了一种包括半导体激光器的波导型谐波调制装置，通过保持相位匹配产生半导体激光器的非线性光谐波的波导，将半导体激光器的光束引导到波导的装置， 波导，以及用于调制波导的光折射率以调制相位匹配条件并由此调制谐波强度的装置。
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8.发明申请公开(公告)号：US20130107616A1
公开(公告)日：2013-05-02
申请号：US13808967
申请日：2010-07-09
申请人： Hideo Ohno , Shoji Ikeda , Hiroyuki Yamamoto , Kenchi Ito , Hiromasa Takahashi
发明人： Hideo Ohno , Shoji Ikeda , Hiroyuki Yamamoto , Kenchi Ito , Hiromasa Takahashi
IPC分类号： H01L29/82
CPC分类号： H01L29/82 , G11C11/1675 , H01L27/228 , H01L43/08
摘要： A magnetoresistive effect element is provided that exhibits a low writing current density while maintaining a high TMR ratio. A laminated structure of a second ferromagnetic layer/a non-magnetic layer/a first ferromagnetic layer is employed as a recording layer. A material of bcc crystalline structure, such as CoFeB, is employed as a second ferromagnetic layer being in contact with MgO barrier layer. A material whose anisotropy field Hk⊥ in the perpendicular direction is large and that satisfies the relationship of 2πrMs
摘要翻译： 提供了具有低写入电流密度同时保持高TMR比的磁阻效应元件。 采用第二铁磁层/非磁性层/第一铁磁层的叠层结构作为记录层。 使用诸如CoFeB的bcc晶体结构的材料作为与MgO阻挡层接触的第二铁磁层。 垂直方向的各向异性场Hk⊥大且满足2pirMs
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9.发明申请公开(公告)号：US20130044537A1
公开(公告)日：2013-02-21
申请号：US13522076
申请日：2011-01-13
CPC分类号： H01L27/228 , G11C11/16 , G11C11/161 , G11C11/1659 , G11C11/5607 , H01L29/82 , H01L43/08 , H01L43/12
摘要： There is provided a magnetic memory with using a magnetoresistive effect element of a spin-injection magnetization reversal type, in which a multi-value operation is possible and whose manufacturing and operation are simple. A preferred aim of this is solved by providing two or more magnetoresistive effect elements which are electrically connected in series to each other and by selecting one of the series-connected elements depending on a direction of a current carried in the series-connected elements, a magnitude thereof, and an order of the current thereof for performing the writing operation. For example, it is solved by differentiating plane area sizes of the respective magnetoresistive effect elements which have the same film structure from each other so as to differentiate resistance change amounts caused by respective magnetization reversal and threshold current values required for respective magnetization reversal from each other.
摘要翻译： 提供了一种使用自旋注入磁化反转型的磁阻效应元件的磁存储器，其中多值操作是可能的，其制造和操作简单。 优选的目的是通过提供两个或更多个彼此串联电连接的磁阻效应元件来解决，并且根据串联元件中承载的电流的方向选择串联元件之一， 其大小及其电流的顺序用于执行写入操作。 例如，通过将具有相同膜结构的各个磁阻效应元件的平面面积尺寸相互分离来解决，以便区分由相应的磁化反转引起的电阻变化量和相应磁化反转所需的阈值电流值 。
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公开(公告)号：US20090310400A1
公开(公告)日：2009-12-17
申请号：US12545379
申请日：2009-08-21
IPC分类号： G11C11/02
CPC分类号： G11C11/16 , G11C8/08 , G11C11/1675 , H01L27/228
摘要： In MRAM using a spin-transfer torque switching, a sufficient writing operation with a small memory cell is realized, and a reading current is enlarged while a reading disturbance is suppressed. In the case where the free layer of the tunnel magneto-resistance element is located on the side of the bit line, using a PMOS transistor, and in the case where the fixed layer of the tunnel magneto-resistance element is located on the side of the bit line, using an NMOS transistor, an anti-parallel writing in a source grounding operation is performed. The reading and writing operation margin is improved by performing a reading operation in an anti-parallel writing direction.
摘要翻译： 在使用自旋转移转矩切换的MRAM中，实现了具有小存储单元的充分的写入操作，并且在读取干扰被抑制的同时增加读取电流。 在隧道磁阻元件的自由层位于位线一侧的情况下，使用PMOS晶体管，并且在隧道磁阻元件的固定层位于 使用NMOS晶体管的位线执行源极接地操作中的反并联写入。 通过执行反并行写入方向的读取操作来提高读取和写入操作余量。
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