Semiconductor laser device
    5.
    发明授权
    Semiconductor laser device 有权
    半导体激光器件

    公开(公告)号:US06909733B2

    公开(公告)日:2005-06-21

    申请号:US09968942

    申请日:2001-10-03

    摘要: A semiconductor laser device comprises, on top of an active layer, an n-type cladding layer of Alx1Ga1−x1As and a p-type cladding layer of (AlxGa1−x)yIn1−yP for defining a barrier height. The p-type cladding layer for defining a barrier height contains more component elements than the n-type cladding layer. The potential difference between the conduction band edges of the p-type cladding layer for defining a barrier height and the active layer is greater than the potential difference between the conduction band edges of the n-type cladding layer and the active layer. The carriers in the active layer are prevented from overflowing into the p-type cladding layer and a material having a high thermal conductivity is used for the n-type cladding layer to prevent the phenomenon of thermal saturation, thereby providing improved optical output.

    摘要翻译: 半导体激光器件包括在有源层的顶部上形成具有Al x 1 Ga 1-x As As的n型包覆层和( 用于限定势垒高度的第1 -Y-P层中的至少一个。 用于限定势垒高度的p型包覆层包含比n型包覆层更多的组成元素。 用于限定势垒高度的p型覆层的导带边缘与有源层之间的电位差大于n型覆层和有源层的导带边缘之间的电位差。 有源层中的载流子被阻止溢出到p型包覆层中,并且具有高导热性的材料用于n型包覆层以防止热饱和现象,从而提供改善的光输出。

    Semiconductor laser and method for manufacturing the same
    6.
    发明授权
    Semiconductor laser and method for manufacturing the same 失效
    半导体激光器及其制造方法

    公开(公告)号:US06888870B2

    公开(公告)日:2005-05-03

    申请号:US10210656

    申请日:2002-07-31

    摘要: A semiconductor laser has a first conduction-type cladding layer, an active layer, and a second conduction-type cladding layer formed on a first conduction-type semiconductor substrate. The second conduction-type cladding layer has a mesa-type stripe-shaped recessed portion in at least four spots, so as to form a central ridge portion, which constitutes a ridge-type current confinement portion, and two or more lateral ridge portions, which are positioned on both sides of the central ridge portion, have a height larger than to that of the central ridge portion, and include the second conduction-type cladding layer. An insulation film with a lower refractive index than the second conduction-type cladding layer is formed in a pair of stripes disposed respectively in the regions from the side surface of the second conduction-type cladding layer on both side surfaces of the central ridge portion toward the outside. The insulation film is not formed on the central ridge portion.

    摘要翻译: 半导体激光器具有形成在第一导电型半导体基板上的第一导电型包覆层,有源层和第二导电型包覆层。 第二导电型包覆层在至少四个点中具有台面状的条状凹部,以形成构成脊型电流限制部的中心脊部分,以及两个以上的侧脊部, 位于中央脊部的两侧的高度比中心脊部的高度大,并且包括第二导电型包覆层。 具有比第二导电型包覆层低的折射率的绝缘膜分别形成在从第二导电型包覆层的侧表面在中心脊部的两个侧表面上的区域中分别设置的一对条带 外。 绝缘膜不形成在中心脊部上。