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    • 72. 发明申请
    • Semiconductor laser device
    • 半导体激光器件
    • US20060133441A1
    • 2006-06-22
    • US11264866
    • 2005-11-02
    • Takahiro ArakidaHisashi Kudo
    • Takahiro ArakidaHisashi Kudo
    • H01S5/00
    • H01S5/028H01S5/02461H01S5/0281
    • An edge-emitting type 650 nm band red semiconductor laser device is provided, which includes a resonator structure having an active layer on a semiconductor substrate. A low reflection three-layer film is provided on an emitting edge face of the resonator structure and a high reflection multi-layer film is provided on a rear edge face of the resonator structure. The low reflection three-layer film is formed by sequentially stacking a first Al2O3 film having a thickness of 10 nm, an Si3N4 film having a thickness of 190 nm, and a second Al2O3 film having a thickness of 10 nm on the emitting edge face by a sputtering process. The edge reflectance at the emitting edge face is set to 10%. The high reflection multi-layer film is formed by alternatively stacking Al2O3 films and a-Si films on the rear edge face. The semiconductor laser device, which includes the low reflection film having a good chemical and thermal stability and a good resistance against chemicals on the emitting edge face, is capable of suppressing occurrence of catastrophic optical damages at the emitting edge face, thereby realizing stable operation over a long period of time.
    • 提供了边缘发射型650nm波段红色半导体激光器件,其包括在半导体衬底上具有有源层的谐振器结构。 在谐振器结构的发射边缘面上设置低反射三层膜,并且在谐振器结构的后边缘面上设置高反射多层膜。 低反射三层膜通过依次堆叠厚度为10nm的第一Al 2 O 3 O 3膜,Si 3 N 3膜, 具有厚度为190nm的N 4 N 4膜和在发射边缘面上具有10nm厚度的第二Al 2 O 3 N 3 N 3膜 通过溅射工艺。 发射边缘的边缘反射率设定为10%。 高反射多层膜通过在后边缘面上交替层叠Al 2 O 3 3膜和a-Si膜而形成。 包括具有良好的化学和热稳定性以及对发射边缘面上的化学物质的良好抗性的低反射膜的半导体激光器件能够抑制发射边缘面处的灾难性光学损伤的发生,从而实现稳定的操作 很长一段时间。
    • 73. 发明申请
    • Optical waveguide and optical transmitting/receiving module
    • 光波导和光发射/接收模块
    • US20060093267A1
    • 2006-05-04
    • US10541088
    • 2004-01-29
    • Takahiro ArakidaKenji Suzuki
    • Takahiro ArakidaKenji Suzuki
    • G02B6/26
    • G02B6/125G02B6/2804G02B6/4246
    • To provide an optical waveguide and an optical transmitting and receiving module able to perform a transmitting operation and a receiving operation simultaneously, wherein a linearly first waveguide 21 that one side is coupled to an optical fiber 3 and the other side is coupled to a light receiving element 4, and a second waveguide 22 that one side is coupled so as to make an acute angle θ with the side of the first waveguide 21 to be coupled to the light receiving element 4 and the other is coupled to a light emitting element 5 are provided. By controlling a shape of the second waveguide 22, the receiving signal light from the optical fiber 3 is received to the light receiving element 4, and is not guided to the second waveguide 22. Therefore, the receiving operation and the transmitting operation can be preformed at the same time. Namely, when the transmitting optical signal is the incident of light from the light emitting element 5 to the second waveguide 22, the optical signal is guided by the second waveguide 22 toward the first waveguide 21, coupled to the first waveguide 21, and guided toward the optical fiber 3.
    • 为了提供能够同时执行发送操作和接收操作的光波导和光发送和接收模块,其中一侧耦合到光纤3并且另一侧的线性第一波导21耦合到光接收 元件4和第二波导22,其一侧被联接以便使与第一波导21的侧面成锐角的角度θ耦合到光接收元件4而另一侧耦合到发光元件5 提供。 通过控制第二波导22的形状,来自光纤3的接收信号光被接收到光接收元件4,并且不被引导到第二波导22。 因此,可以同时进行接收操作和发送操作。 也就是说,当发射光信号是从发光元件5到第二波导22的光的入射时,光信号被第二波导管22引导到与第一波导21耦合的第一波导21,并被引向 光纤3。
    • 77. 发明申请
    • Vertical cavity surface emitting laser
    • 垂直腔表面发射激光
    • US20090180506A1
    • 2009-07-16
    • US12318421
    • 2008-12-29
    • Osamu MaedaMasaki ShiozakiTakahiro Arakida
    • Osamu MaedaMasaki ShiozakiTakahiro Arakida
    • H01S5/183
    • H01S5/18394H01S5/0425H01S5/18311H01S5/18327H01S5/18347H01S5/18358H01S2301/166H01S2301/176
    • A Vertical Cavity Surface Emitting Laser (VCSEL) capable of providing high output of fundamental transverse mode while preventing oscillation of high-order transverse mode is provided. The VCSEL includes a semiconductor layer including an active layer and a current confinement layer, and a transverse mode adjustment section formed on the semiconductor layer. The current confinement layer has a current injection region and a current confinement region. The transverse mode adjustment section has a high reflectance area and a low reflectance area. The high reflectance area is formed in a region including a first opposed region opposing to a center point of the current injection region. A center point of the high reflectance area is arranged in a region different from the first opposed region. The low reflectance area is formed in a region where the high reflectance area is not formed, in an opposed region opposing to the current injection region.
    • 提供了能够提供高输出基本横模的垂直腔面发射激光器(VCSEL),同时防止高阶横模的振荡。 VCSEL包括形成在半导体层上的包括有源层和电流限制层的半导体层和横向模式调整部。 电流限制层具有电流注入区域和电流限制区域。 横模调整部具有高反射面积和低反射面积。 高反射率区域形成在包括与电流注入区域的中心点相对的第一相对区域的区域中。 高反射率区域的中心点布置在与第一相对区域不同的区域中。 在与电流注入区域相对的相对区域中,在没有形成高反射率区域的区域中形成低反射率区域。