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    • 103. 发明授权
    • Semiconductor laser device
    • 半导体激光器件
    • US4916709A
    • 1990-04-10
    • US322178
    • 1989-03-13
    • Yoichiro OtaTetsuya Yagi
    • Yoichiro OtaTetsuya Yagi
    • H01S5/00H01S5/223H01S5/323
    • H01S5/2232H01S5/2231H01S5/2237H01S5/32316
    • A semiconductor laser device includes an active layer, a pair of different conductivity type cladding layers having a wider energy band gap than that of the active layer, sandwiching the active layer. One of the cladding layers has a stripe ridge or stripe groove. A high dopant concentration diffusion region having the same conductivity type as that of the cladding layer is disposed on the stripe ridge or the stripe groove. Therefore, a refractive index difference is provided in the two directions transverse to the length of the resonant cavity and a low astigmatism. Furthermore, because the light confinement is strengthened, the light emission efficiency is also enhanced.
    • 半导体激光器件包括有源层,具有比活性层的能带宽更宽的能量带隙的一对不同的导电型覆盖层,夹持有源层。 包层中的一个具有条纹脊或条纹槽。 具有与包覆层相同的导电类型的高掺杂剂浓度扩散区域设置在条纹脊或条纹槽上。 因此,在横向于共振腔的长度的两个方向上提供折射率差,并且具有低散光。 此外,由于光限制得到加强,发光效率也得到提高。
    • 106. 发明专利
    • Semiconductor laser device
    • 半导体激光器件
    • JP2007201372A
    • 2007-08-09
    • JP2006021076
    • 2006-01-30
    • Sharp Corpシャープ株式会社
    • HOSOBANE HIROYUKI
    • H01S5/22
    • H01S5/2231H01S5/20H01S5/2219H01S5/305H01S5/32316H01S2301/173
    • PROBLEM TO BE SOLVED: To provide a semiconductor laser device with high output for reducing an operating voltage.
      SOLUTION: This semiconductor laser device is provided with a first conductive buffer layer 11, a first conductive clad layer 12, an active layer 13, and a second conductive clad layer 14 formed on a first conductive semiconductor substrate 10. The band gap of the first conductive buffer layer 11 is set so as to be larger than the band gap of the semiconductor substrate 10, and smaller than the band gap of the first conductive clad layer 12. The impurity density of the first conductive buffer layer 11 is set so as to be larger than the impurity density of the first conductive clad layer 12.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供具有高输出的半导体激光器件以降低工作电压。 解决方案:该半导体激光器件设置有形成在第一导电半导体衬底10上的第一导电缓冲层11,第一导电覆层12,有源层13和第二导电覆层14。带隙 将第一导电性缓冲层11的杂质浓度设定为大于半导体基板10的带隙,并且小于第一导电覆盖层12的带隙。第一导电性缓冲层11的杂质浓度被设定 以便大于第一导电覆层12的杂质浓度。版权所有(C)2007,JPO&INPIT