中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.016 seconds)

    Diamond laser crystal and method manufacturing the same
    4.
    发明授权
    Diamond laser crystal and method manufacturing the same 失效
    钻石激光晶体和方法制造相同

    公开(公告)号：US4950625A

    公开(公告)日：1990-08-21

    申请号：US364693

    申请日：1989-06-08

    Applicant: Takeru Nakashima ,  Shuichi Satoh ,  Kazuwo Tsuji

    Inventor： Takeru Nakashima ,  Shuichi Satoh ,  Kazuwo Tsuji

    IPC: C30B33/04 ,  B01J3/06 ,  C30B29/04 ,  C30B33/00 ,  H01S3/16

    CPC classification number: H01S3/1681 ,  B01J3/062 ,  C30B29/04 ,  C30B33/00 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/069

    Abstract: A method of manufacturing a diamond laser crystal having an excellent laser efficiency is performed by first, preparing a synthetic type Ib diamond containing at least 60 volume percent of a (111) plane growth sector (43) is prepared. This synthetic diamond is then thermally treated under high temperature/high pressure, so that type Ib nitrogen contained in the synthetic diamond is converted to type IaA nitrogen. Thereafter an electron beam is applied to the synthetic diamond in order to generate vacancies in the synthetic diamond. Finally annealing is performed on the synthetic diamond to form H3 centers by coupling the type IaA nitrogen atoms contained in the synthetic diamond, with the vacancies. According to this method, the H3 centers can be formed in the synthetic type Ib diamond at high concentration, while formation of NV centers which become an obstacle to laser action, can be suppressed.

    Material for diamond sintered body die and diamond sintered body die
    7.
    发明授权
    Material for diamond sintered body die and diamond sintered body die 有权
    金刚石烧结体模具和金刚石烧结体模具的材料

    公开(公告)号：US07131314B2

    公开(公告)日：2006-11-07

    申请号：US10497084

    申请日：2003-05-23

    Applicant: Minoru Yoshida ,  Takeru Nakashima ,  Tadashi Yamaguchi

    Inventor： Minoru Yoshida ,  Takeru Nakashima ,  Tadashi Yamaguchi

    IPC: B21C3/02

    CPC classification number: B21C3/02 ,  B21C3/025 ,  B21C3/18

    Abstract: To provide a diamond compact die semi-manufactured product and a diamond compact die that do not crack during die processing.A diamond compact die semi-manufactured product includes a diamond compact and a holding ring. The holding ring is a cylinder composed of a tungsten alloy, and the inner diameter thereof is tapered. The diamond compact is tapered so as to fit to the taper of the cylinder and the diamond compact is press-fitted to the holding ring. For lower cost production, the tapered face of the diamond compact is formed by electric spark machining. The tungsten alloy contains 90% to 97% by weight of tungsten and 3% to 10% by weight of nickel.

    Abstract translation: 提供金刚石紧凑模具半成品和在模具加工期间不裂纹的金刚石紧凑型模具。 金刚石紧凑模具半成品包括金刚石紧固件和固定环。 保持环是由钨合金构成的圆筒，其内径为锥形。 金刚石压块是锥形的，以适应圆筒的锥形，金刚石压块压配合到保持环上。 为了降低成本，金刚石致密体的锥形面通过电火花加工形成。 钨合金含有90重量％至97重量％的钨和3重量％至10重量％的镍。

    Material for diamond sintered body die and diamond sintered body die
    8.
    发明申请
    Material for diamond sintered body die and diamond sintered body die 有权
    金刚石烧结体模具和金刚石烧结体模具的材料

    公开(公告)号：US20050076897A1

    公开(公告)日：2005-04-14

    申请号：US10497084

    申请日：2003-05-23

    Applicant: Minoru Yoshida ,  Takeru Nakashima ,  Tadashi Yamaguchi

    Inventor： Minoru Yoshida ,  Takeru Nakashima ,  Tadashi Yamaguchi

    IPC: B21C3/02 ,  B21C3/18 ,  B28D5/02 ,  B23H1/00

    CPC classification number: B21C3/02 ,  B21C3/025 ,  B21C3/18

    Abstract: To provide a diamond compact die semi-manufactured product and a diamond compact die that do not crack during die processing. A diamond compact die semi-manufactured product includes a diamond compact and a holding ring. The holding ring is a cylinder composed of a tungsten alloy, and the inner diameter thereof is tapered. The diamond compact is tapered so as to fit to the taper of the cylinder and the diamond compact is press-fitted to the holding ring. For lower cost production, the tapered face of the diamond compact is formed by electric spark machining. The tungsten alloy contains 90% to 97% by weight of tungsten and 3% to 10% by weight of nickel.

    Abstract translation: 提供金刚石紧凑模具半成品和在模具加工期间不裂纹的金刚石紧凑型模具。 金刚石紧凑模具半成品包括金刚石紧固件和固定环。 保持环是由钨合金构成的圆筒，其内径为锥形。 金刚石压块是锥形的，以适应圆筒的锥形，金刚石压块压配合到保持环上。 为了降低成本，金刚石致密体的锥形面通过电火花加工形成。 钨合金含有90重量％至97重量％的钨和3重量％至10重量％的镍。

    Diamond laser, method for producing the same, and method for activating such a laser
    9.
    发明授权
    Diamond laser, method for producing the same, and method for activating such a laser 失效
    金刚石激光器，其制造方法以及激活这种激光的方法

    公开(公告)号：US4949347A

    公开(公告)日：1990-08-14

    申请号：US306813

    申请日：1989-02-03

    Applicant: Shuichi Satoh ,  Kazuwo Tsuji ,  Takeru Nakashima

    Inventor： Shuichi Satoh ,  Kazuwo Tsuji ,  Takeru Nakashima

    IPC: H01S3/08 ,  C30B33/00 ,  H01S3/094 ,  H01S3/16

    CPC classification number: H01S3/16 ,  C30B29/04 ,  C30B33/00

    Abstract: A diamond laser formed of a synthetic diamond provides a high output power and a variable wavelength in the near infrared region. The maximum value of the optical density of H2 centers in the direction of the pumping light is in the range of 0.01 to 4. Laser action is caused in the range of 1000 to 1400 nm by an external pumping light at 650 to 950 nm. Such a diamond laser is produced by preparing a synthetic Ib type diamond having a nitrogen concentration within the range of 1.times.10.sup.17 to 8.5 10.sup.19 atoms/cm.sup.3, subjecting this synthetic diamond to an electron irradiation with a dose of not less than 5.times.10.sup.17 electrons/cm.sup.2, and heat-treating the synthetic diamond in a vacuum of not more than 1 Torr or in an inert gas atmosphere and at a temperature within the range of 1400.degree. to 1850.degree. C. If the threshold value of the pumping light intensity necessary for causing laser action is Ith then, to make the pumping light intensity I greater than Ith throughout the laser crystal, it is important, that the maximum value of the optical density of H2 is within the range between 0.01 and 4.

Patent Agency Ranking