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    Laser device
    1.
    发明申请
    Laser device 审中-公开
    激光设备

    公开(公告)号：US20050036531A1

    公开(公告)日：2005-02-17

    申请号：US10892475

    申请日：2004-07-16

    申请人： Hirofumi Kan ,  Akihiro Sone ,  Takunori Taira ,  Yasunori Furukawa

    发明人： Hirofumi Kan ,  Akihiro Sone ,  Takunori Taira ,  Yasunori Furukawa

    IPC分类号： H01S3/16 ,  H01S3/042 ,  H01S3/06 ,  H01S3/091 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/113

    CPC分类号： H01S3/0941 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/094038 ,  H01S3/1611 ,  H01S3/1671

    摘要： A laser device 1 is provided with: a solid sate laser medium made of GdVO4 or YVO4 to which Nd3+ is added, having first and second surfaces 10A, 10B facing each other; a high reflection film 12 formed on the first surface of the laser medium for reflecting light having a wavelength in a first wavelength range 880±5 nm and in a second wavelength range from 910 nm to 916 nm; a reflecting means 20 placed in a manner where an optical resonator of which the resonance Q-value for light having a wavelength in the second wavelength range is greater than the resonance Q-value for light of every wavelength in a third wavelength range from 1060 nm to 1065 nm is formed together with the high reflection film and the laser medium is positioned within the resonator; and an excitation light source 22 that outputs light having a wavelength in the first wavelength range for exciting the laser medium. Laser device 1 is formed so that light from the excitation light source is guided into the resonator in a direction different from the optical axis direction of the resonator, and enters into the laser medium. As a result, a solid state laser device having a high light-emission efficiency can be implemented.

    摘要翻译： 激光装置1设置有：添加有Nd + 3+的GdVO 4或YVO 4制成的固体激光介质，具有彼此面对的第一和第二表面10A，10B; 形成在激光介质的第一表面上的高反射膜12，用于反射具有880±5nm的第一波长范围和910nm至916nm的第二波长范围的波长的光; 一个反射装置20，以这样的方式放置：其中具有第二波长范围的波长的光的谐振Q值大于来自1060nm的第三波长范围内的每个波长的光的谐振Q值的光学谐振器 与高反射膜一起形成1065nm，激光介质位于谐振器内; 以及激励光源22，其输出具有用于激发激光介质的第一波长范围的波长的光。 激光装置1形成为使得来自激发光源的光沿着与谐振器的光轴方向不同的方向被引导到谐振器中，并进入激光介质。 结果，可以实现具有高发光效率的固态激光器件。

    Optically functional device, single crystal substrate for the device and method for its use
    4.
    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％。

    Single crystal of lithium niobate or tantalate and its optical element, and process and apparatus for producing an oxide single crystal
    5.
    发明授权
    Single crystal of lithium niobate or tantalate and its optical element, and process and apparatus for producing an oxide single crystal 有权
    铌酸锂或钽酸锂的单晶及其光学元件，以及用于生产氧化物单晶的工艺和设备

    公开(公告)号：US06673330B1

    公开(公告)日：2004-01-06

    申请号：US09521899

    申请日：2000-03-09

    申请人： Kenji Kitamura ,  Yasunori Furukawa ,  Shunji Takekawa ,  Shigeyuki Kimura

    发明人： Kenji Kitamura ,  Yasunori Furukawa ,  Shunji Takekawa ,  Shigeyuki Kimura

    IPC分类号： C01D1500

    CPC分类号： C30B15/12 ,  C30B15/00 ,  C30B29/30 ,  Y10T117/10

    摘要： A single crystal of lithium niobate or lithium tantalate may be grown from a melt of a composition having a molar excess of Li compared to a melt having the stoichiometric amount of lithium, and having a molar fraction of Li2O/(Nb2O5+Li2O) or Li2O/(Ta2O5+Li2O) within a range of at least 0.490 and less than 0.500. The single crystal also has at least one element selected from the group consisting of Mg, Zn, Sc and In, in an amount of from 0.1 to 3.0 mol % based on the total amount of the elements, Nb and Li, or the total amount of the elements, Ta and Li.

    摘要翻译： 铌酸锂或钽酸锂的单晶可以从具有摩尔过量的Li的组合物的熔体与具有化学计量的锂的熔体相比生长，并且具有Li 2 O /（Nb 2 O 5 + Li 2 O）或Li 2 O的摩尔分数 /（Ta2O5 + Li2O）在0.490以上且小于0.500的范围内。 单晶还具有选自Mg，Zn，Sc和In中的至少一种元素，相对于元素的总量，Nb和Li为0.1〜3.0摩尔％，或者总量 的元素，Ta和Li。

    MEASURING DEVICE, EXPOSURE APPARATUS, AND DEVICE MANUFACTURING METHOD
    8.
    发明申请
    MEASURING DEVICE, EXPOSURE APPARATUS, AND DEVICE MANUFACTURING METHOD 审中-公开
    测量装置，曝光装置和装置制造方法

    公开(公告)号：US20100112733A1

    公开(公告)日：2010-05-06

    申请号：US12580875

    申请日：2009-10-16

    申请人： Yasunori Furukawa

    发明人： Yasunori Furukawa

    IPC分类号： H01L21/66 ,  G01B9/02 ,  H01L21/26

    CPC分类号： G03F7/706 ,  G01M11/0264 ,  G01M11/0271

    摘要： A measuring device configured to measure a wave aberration of an optical system to be measured includes a reflection optical element for reflecting light, having passed through a mask and the optical system to be measured, into the optical system to be measured, and a detector for detecting an interference fringe of light having passed through pinholes and openings. The mask has at least three pinhole-opening pairs, each including one pinhole and one opening having a larger diameter than the pinhole that are arranged point-symmetrically, the three pinhole-opening pairs having the common center of symmetry. The light to be measured formed in two of the three pairs is made to interfere with the reference light formed in the remaining pair, or, the light to be measured formed in one of the three pairs is made to interfere with the reference light formed in the other two pairs.

    摘要翻译： 被配置为测量待测光学系统的波像差的测量装置包括用于将已经通过掩模和待测量的光学系统的光反射到待测量的光学系统中的反射光学元件，以及用于 检测穿过针孔和开口的光的干涉条纹。 掩模具有至少三个针孔开口对，每个针孔开口对包括一个针孔和一个开口，其具有比针对对称布置的针孔更大的直径，三个针孔开口对具有共同的对称中心。 使被测量的光被形成为三对中的两对，使得与剩下的一对中形成的基准光干涉，或者使三对中的一个中形成的被测量的光与第一对中形成的基准光干涉 另外两对。

    Hologram recording apparatus and method therefor
    9.
    发明授权
    Hologram recording apparatus and method therefor 失效
    全息记录装置及其方法

    公开(公告)号：US06535472B1

    公开(公告)日：2003-03-18

    申请号：US09631646

    申请日：2000-08-02

    申请人： Myeongkyu Lee ,  Kenji Kitamura ,  Yasunori Furukawa ,  Shunji Takekawa ,  Hideki Hatano

    发明人： Myeongkyu Lee ,  Kenji Kitamura ,  Yasunori Furukawa ,  Shunji Takekawa ,  Hideki Hatano

    IPC分类号： G11B700

    CPC分类号： G11B7/1275 ,  G03H2001/026 ,  G03H2001/0268 ,  G11B7/0025 ,  G11B7/0065 ,  G11B7/243 ,  G11B2007/0009 ,  G11B2007/24306 ,  G11B2007/2432

    摘要： A hologram recording apparatus is capable of directing interferable signal light and reference light into a hologram recording medium to record an information signal carried by the signal light. The hologram recording medium is sensitive to a first light at a first wavelength in an ultraviolet or short-wavelength visible light band to develop light induced absorption. The apparatus includes a light source for irradiating the hologram recording medium with the first light, and a laser light source for irradiating the hologram recording medium with signal light and reference light at a second wavelength longer than the first wavelength after the first light is irradiated.

    摘要翻译： 全息记录装置能够将干涉信号光和参考光引导到全息图记录介质中，以记录由信号光携带的信息信号。 全息图记录介质对紫外或短波长可见光波段中的第一波长的第一光敏感，以产生光吸收。 该装置包括用于照射第一光的全息图记录介质的光源和用于在第一光照射之后以比第一波长长的第二波长的信号光和参考光照射全息图记录介质的激光光源。

    Measurement method and measurement apparatus
    10.
    发明授权
    Measurement method and measurement apparatus 有权
    测量方法和测量装置

    公开(公告)号：US09297646B2

    公开(公告)日：2016-03-29

    申请号：US13316610

    申请日：2011-12-12

    申请人： Yasunori Furukawa ,  Toru Shimizu

    发明人： Yasunori Furukawa ,  Toru Shimizu

    IPC分类号： G01B9/023 ,  G01B11/24 ,  G01B11/255

    CPC分类号： G01B11/24 ,  G01B11/255

    摘要： The present invention provides a measurement method of measuring a surface shape of a measurement target surface including an aspherical surface by using a measurement apparatus including an optical system which guides a light from the measurement target surface to a detection unit having a detection surface, including a step of converting, into coordinates on the measurement target surface by using a coordinate conversion table, coordinates on the detection surface that indicate positions where light traveling from the measurement target surface enters the detection surface, and a step of converting, by using an angle conversion table, angle differences between angles of light reflected by a reference surface and angles of light reflected by the measurement target surface at the respective coordinates on the detection surface into angle differences at a plurality of respective coordinates on the measurement target surface that correspond to the respective coordinates on the detection surface.

    摘要翻译： 本发明提供一种测量方法，通过使用包括将来自测量对象表面的光引导到具有检测表面的检测单元的光学系统的测量装置，测量包括非球面的测量对象表面的表面形状，包括 通过使用坐标转换表将测量目标表面的坐标转换为表示从测量对象表面行进的光的位置的检测面上的坐标进入检测面的步骤，以及通过使用角度变换 由基准面反射的光的角度与测定对象面的检测面的各坐标上反射的光的角度之间的角度差与在各测定对象面上对应的测定对象面上的多个坐标上的角度差 坐标检测 表面。