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    • 4. 发明授权
    • Semiconductor optical amplifier
    • 半导体光放大器
    • US08786941B2
    • 2014-07-22
    • US13166900
    • 2011-06-23
    • Masaru KuramotoMasao IkedaRintaro KodaTomoyuki OkiHideki WatanabeTakao MiyajimaHiroyuki Yokoyama
    • Masaru KuramotoMasao IkedaRintaro KodaTomoyuki OkiHideki WatanabeTakao MiyajimaHiroyuki Yokoyama
    • H01S5/00
    • H01S5/1064H01S5/0425H01S5/0602H01S5/0657H01S5/16H01S5/22H01S5/32341H01S5/34333H01S5/50
    • A semiconductor optical amplifier includes: a laminated structure sequentially including a first compound semiconductor layer composed of GaN compound semiconductor and having a first conductivity type, a third compound semiconductor layer having a light amplification region composed of GaN compound semiconductor, and a second compound semiconductor layer composed of GaN compound semiconductor and having a second conductivity type; a second electrode formed on the second compound semiconductor layer; and a first electrode electrically connected to the first compound semiconductor layer. The laminated structure has a ridge stripe structure. When widths of the ridge stripe structure in a light output end face and the ridge stripe structure in a light incident end face are respectively Wout, and Win, Wout>Win is satisfied. A carrier non-injection region is provided in an internal region of the laminated structure from the light output end face along an axis line of the semiconductor optical amplifier.
    • 半导体光放大器包括:依次包括由GaN化合物半导体构成的第一化合物半导体并具有第一导电类型的层压结构,具有由GaN化合物半导体构成的光放大区域的第三化合物半导体层和第二化合物半导体层 由GaN化合物半导体构成并具有第二导电类型; 形成在第二化合物半导体层上的第二电极; 和与第一化合物半导体层电连接的第一电极。 层叠结构具有脊形条纹结构。 当光输出端面中的棱条结构的宽度和光入射端面中的脊条纹结构的宽度分别为Wout时,满足Win,Wout> Win。 载体非注入区域沿着半导体光放大器的轴线从光输出端面设置在层叠结构的内部区域中。
    • 7. 发明授权
    • Laser diode element assembly and method of driving the same
    • 激光二极管元件组装及其驱动方法
    • US08483256B2
    • 2013-07-09
    • US13417998
    • 2012-03-12
    • Tomoyuki OkiMasaru KuramotoRintaro KodaHideki WatanabeHiroyuki Yokoyama
    • Tomoyuki OkiMasaru KuramotoRintaro KodaHideki WatanabeHiroyuki Yokoyama
    • H01S3/08
    • H01S5/0602B82Y20/00H01S5/0425H01S5/0625H01S5/1064H01S5/3063H01S5/34333H01S2301/166
    • A laser diode element assembly includes: a laser diode element; and a light reflector, in which the laser diode element includes (a) a laminate structure body configured by laminating, in order, a first compound semiconductor layer of a first conductivity type made of a GaN-based compound semiconductor, a third compound semiconductor layer made of a GaN-based compound semiconductor and including a light emission region, and a second compound semiconductor layer of a second conductivity type made of a GaN-based compound semiconductor, the second conductivity type being different from the first conductivity type, (b) a second electrode formed on the second compound semiconductor layer, and (c) a first electrode electrically connected to the first compound semiconductor layer, the laminate structure body includes a ridge stripe structure, and a minimum width Wmin and a maximum width Wmax of the ridge stripe structure satisfy 1
    • 激光二极管元件组件包括:激光二极管元件; 和光反射器,其中激光二极管元件包括(a)层叠结构体,其按顺序层叠由GaN基化合物半导体制成的第一导电类型的第一化合物半导体层,第三化合物半导体层 由GaN系化合物半导体构成的发光区域和由GaN系化合物半导体构成的第二导电型的第二化合物半导体层,第二导电型与第一导电型不同,(b) 形成在所述第二化合物半导体层上的第二电极,和(c)与所述第一化合物半导体层电连接的第一电极,所述层叠结构体包括脊条结构,并且所述脊的最小宽度Wmin和最大宽度Wmax 条纹结构满足1