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    • 2. 发明申请
    • Laser device
    • 激光设备
    • US20050152430A1
    • 2005-07-14
    • US11023419
    • 2004-12-29
    • Toshikazu OnishiKazutoshi OnozawaShinji YoshidaDaisuke Ueda
    • Toshikazu OnishiKazutoshi OnozawaShinji YoshidaDaisuke Ueda
    • H01S3/105G01N21/84H01S3/08H01S5/068H01S5/10H01S5/183
    • H01S5/18394H01S5/1046H01S5/18319H01S5/1835
    • According to the present invention, a first p-side electrode 7A made of metal which is provided with regularly arranged holes 10 having a diameter smaller than a laser oscillation wavelength and a second p-side electrode 7B arranged around the periphery of the first p-type electrode 7A are used as a p-side mirror of a surface-emitting laser. Light in a resonator formed of a p-side electrode 7 and an n-type mirror 2 is first converted to a surface plasmon and then reconverted to the light by the p-side electrode 7A, and then emitted outside the resonator. This improves the light transmittance, thereby permitting use of metal which is considered to have inherently low light transmittance as a material for the p-side electrode 7. If the p-side electrode 7 is made of metal, operating voltage is reduced and heat dissipation improves, without causing a spike in a valence band, which occurs when a semiconductor layer is used. Further, due to the nonlinear effect of the mirror, optical feedback to the inside of the resonator is controlled, whereby a laser device with excellent noise characteristic is obtained.
    • 根据本发明,由金属制成的第一p侧电极7A,其具有规则排列的直径小于激光振荡波长的孔10,第二p侧电极7B布置在第一 p型电极7A用作表面发射激光器的p侧反射镜。 首先将由p侧电极7和n型反射镜2形成的谐振器中的光转换为表面等离子体,然后通过p侧电极7A再次转换为光,然后发射到谐振器外部。 这提高了透光率,从而允许使用被认为具有固有的低透光率的金属作为p侧电极7的材料。 如果p侧电极7由金属制成,则工作电压降低,散热改善,而不会在使用半导体层时发生价带的尖峰。 此外,由于反射镜的非线性效应,对谐振器内部的光反馈被控制,从而获得具有优异噪声特性的激光器件。
    • 5. 发明授权
    • Optical pickup
    • 光学拾音
    • US07146621B2
    • 2006-12-05
    • US10762383
    • 2004-01-23
    • Kazutoshi OnozawaDaisuke Ueda
    • Kazutoshi OnozawaDaisuke Ueda
    • G11B33/14
    • G11B7/123G11B7/0933G11B7/12
    • An inventive optical pickup includes: a base; a movable part; a fixed part; and a first yoke. The movable part, fixed part and first yoke are provided over the base. The movable part is provided with: a hologram element; a package equipped with a laser/photodetectors integrated element in which a semiconductor laser and photodetectors are integrated; and an objective lens. A magnet is provided on each of second yokes provided on the base, and a heat dissipating medium is provided in a gap between a package metal section of the package and another magnet.
    • 本发明的光学拾取器包括:基座; 可移动部分; 固定部分; 和第一个轭。 可移动部分,固定部分和第一磁轭设置在基座上。 可动部设有:全息元件; 配有激光/光电检测器集成元件的封装,其中集成了半导体激光器和光电检测器; 和物镜。 在设置在基座上的每个第二轭上设置有磁铁,并且在封装的封装金属部分和另一个磁体之间的间隙中设置散热介质。