Wavelength-tunable semiconductor laser
    4.
    发明授权
    Wavelength-tunable semiconductor laser 失效
    波长可调半导体激光器

    公开(公告)号:US4873691A

    公开(公告)日:1989-10-10

    申请号:US224726

    申请日:1988-07-27

    摘要: A wavelength-tunable semiconductor laser having an active part and an external waveguide part is disclosed. The external waveguide part has a diffraction grating, such as a distributed Bragg reflector, and a quantum well structure optically coupled to the diffraction grating, together with electrodes for impressing an electric field to the quantum well structure. By applying the electric filed to the quantum well structure, the refractive index in the optically coupled diffraction grating/quantum well structure, and light oscillation wavelength in the external waveguide part, can be varied.

    摘要翻译: 公开了一种具有有源部分和外部波导部分的波长可调谐半导体激光器。 外部波导部分具有衍射光栅,例如分布式布拉格反射器,以及光学耦合到衍射光栅的量子阱结构,以及用于向量子阱结构施加电场的电极。 通过将电场施加到量子阱结构,可以改变光耦合衍射光栅/量子阱结构中的折射率和外部波导部分中的光振荡波长。

    Semiconductor laser devices
    5.
    发明授权
    Semiconductor laser devices 失效
    半导体激光器件

    公开(公告)号:US4841536A

    公开(公告)日:1989-06-20

    申请号:US850685

    申请日:1986-04-11

    IPC分类号: H01S5/227

    CPC分类号: H01S5/227 H01S5/2275

    摘要: This invention discloses a semiconductor laser capable of a high temperature and high output operation by forming a mesa stripe having an active layer in a reverse triangular mesa shape and forming thick semiconductor layers on both sides of the mesa stripe in such a manner that the resulting p-n junctions have a current blocking function. The invention discloses also a semiconductor laser wherein the formation of the p-n junctions described above is made before the formation of the reverse mesa stripe, and ion implantation is introduced in order to form the p-n junctions. Furthermore, the invention relates to transistors and semiconductor lasers using InGaAsP type quaternary compounds as the semiconductor. The quaternary compounds having a composition in which an energy band gap is from 1.2 to 1.4 eV are formed in a thickness of up to 1 .mu.m, and there can be thus obtained semiconductor devices having a small leakage current and being stable with time.

    摘要翻译: 本发明公开了一种能够通过形成具有反三角台面形状的有源层的台面条形状的高温高输出操作的半导体激光器,在台面条的两侧形成厚半导体层,使得所得到的pn 结点具有电流阻塞功能。 本发明还公开了一种半导体激光器,其中在形成反向台面条之前进行上述p-n结的形成,并且引入离子注入以形成p-n结。 此外,本发明涉及使用InGaAsP型四元化合物作为半导体的晶体管和半导体激光器。 形成其能带隙为1.2〜1.4eV的组成的四元化合物的厚度为1μm以下,可以得到漏电流小且时间稳定的半导体器件。

    SURFACE EMISSION LASER
    10.
    发明申请
    SURFACE EMISSION LASER 有权
    表面发射激光

    公开(公告)号:US20120230361A1

    公开(公告)日:2012-09-13

    申请号:US13512595

    申请日:2010-11-29

    IPC分类号: H01S5/18

    摘要: Specifically, provided is a horizontal-cavity surface-emitting laser including, on a semiconductor substrate: a cavity structure; a waveguide layer; and a reflecting part, wherein a first electrode provided on the semiconductor substrate along side regions of the cavity structure and the reflecting part and a second electrode provided on the main surface of the cavity structure are provided, the first electrode includes an electrode (1) that is provided around one side region of the reflecting part located in the direction intersecting with the traveling direction of light guided through the waveguide layer and an electrode (2) provided around one side region of the cavity structure and the other side region of the reflecting part that are located in the direction parallel with the traveling direction of light guided through the waveguide layer, and the shape of the electrode (2) has different widths at at least two positions.

    摘要翻译: 具体地,提供了一种水平腔表面发射激光器,其包括在半导体衬底上:空腔结构; 波导层; 以及反射部,其中,设置在所述半导体衬底上的沿着所述空腔结构的侧面区域和所述反射部分的第一电极和设置在所述空腔结构的主表面上的第二电极,所述第一电极包括电极(1) 设置在与通过波导层引导的光的行进方向相交的方向上的反射部的一个侧面区域和设置在该空腔结构的一个侧面区域的反射部的另一侧区域的电极(2) 位于与通过波导层引导的光的行进方向平行的方向的部分,并且电极(2)的形状在至少两个位置处具有不同的宽度。