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    • 34. 发明申请
    • SEMICONDUCTOR LIGHT SOURCE AND METHOD OF FABRICATION THEREOF
    • 半导体光源及其制造方法
    • WO2010142988A1
    • 2010-12-16
    • PCT/GB2010/050967
    • 2010-06-09
    • THE UNIVERSITY OF SHEFFIELDGROOM, KristianHOGG, Richard
    • GROOM, KristianHOGG, Richard
    • H01S5/223H01S5/50H01S5/16H01S5/20H01S5/22H01S5/10
    • H01S5/50H01S5/1014H01S5/168H01S5/205H01S5/2202H01S5/2209H01S5/2231
    • Embodiments of the present invention provided a method of fabricating a semiconductor light source structure. The method comprises providing a GaAs substrate; forming a lower cladding layer above the substrate, the lower cladding layer comprising an AI x Ga 1-x As alloy; forming an active region above the lower cladding layer, the active region comprising a GaAs separate confinement heterostructure; and forming an upper cladding layer comprising an AI x Ga 1-X As alloy above the active region in the form of an elongate stripe bounded on either side by an InGaP current-blocking layer, the elongate stripe defining an index-guided optical waveguide. The stripe is formed such that at least one free end of the stripe is spaced apart from an edge of the substrate in a direction parallel to a longitudinal axis of the stripe such that a portion of the lower cladding layer, active region, current blocking layer and upper cladding layer extend beyond the at least one free end of the stripe thereby to provide an unpumped and laterally unguided window region.
    • 本发明的实施例提供了一种制造半导体光源结构的方法。 该方法包括提供GaAs衬底; 在所述衬底上形成下包层,所述下包层包含Al x Ga 1-x As合金; 在所述下包层上形成有源区,所述有源区包括GaAs分离的限制异质结构; 并且在InGaP电流阻挡层上形成由两边限定的细长条形式的有源区上方的包含Al x Ga 1-x As合金的上覆层,所述细长条限定折射率导引光波导。 条纹形成为使得条带的至少一个自由端在平行于条纹的纵向轴线的方向上与衬底的边缘间隔开,使得下包层的一部分,有源区,电流阻挡层 并且上包层延伸超过条带的至少一个自由端,从而提供未抽空和横向未导向的窗口区域。
    • 39. 发明申请
    • SEPARATE LATERAL CONFINEMENT QUANTUM WELL LASER
    • 独立的边界限定量子激光器
    • WO03003532B1
    • 2003-04-10
    • PCT/US0219844
    • 2002-06-24
    • UNIV ILLINOIS
    • COLEMAN JAMES JSWINT REUEL BZEDIKER MARK S
    • H01S5/20H01S5/22H01S5/223H01S5/34H01S5/00H01L33/00
    • B82Y20/00H01S5/20H01S5/22H01S5/2231H01S5/34
    • A semiconductor quantum well laser having separate lateral confinement of injected carriers and the optical mode. A ridge waveguide 24 is used to confine the optical mode. A buried heterostructure 16/22, 18/22 confines injected carriers. A preferred embodiment laser of the invention is a layered semiconductor structure including optical confinement layers. A buried heterojunction quantum well 22 within the optical confinement layers 16, 18 is dimensioned and arranged to confine injected carriers during laser operation. A ridge waveguide 24 outside the optical confinement layers is dimensioned and arranged with respect to the buried heterojunction to confine an optical mode during laser operation. An index step created by the buried heterojunction is substantially removed from the optical mode.
    • 一种半导体量子阱激光器,其具有注入载流子的分离的侧向约束和光学模式。 脊状波导24用于限制光学模式。 埋地异质结构16/22,18/22限制注入载体。 本发明的优选实施例激光器是包括光限制层的分层半导体结构。 在光限制层16,18内的掩埋异质结量子阱22的尺寸设置和布置成在激光操作期间限制注入的载流子。 在光学限制层外部的脊形波导24相对于掩埋异质结被设计和布置,以在激光操作期间限制光学模式。 由掩模异质结产生的折射率步骤基本上从光学模式中去除。