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    • 9. 发明专利
    • Semiconductor laser device and method of manufacturing the same
    • 半导体激光器件及其制造方法
    • JP2009033009A
    • 2009-02-12
    • JP2007197119
    • 2007-07-30
    • Panasonic Corpパナソニック株式会社
    • TAKAYAMA TORUSATO TOMOYAKIDOGUCHI ISAO
    • H01S5/22
    • H01S5/22B82Y20/00H01S5/0287H01S5/0655H01S5/1039H01S5/1064H01S5/162H01S5/2214H01S5/2216H01S5/2218H01S5/34326
    • PROBLEM TO BE SOLVED: To attain a semiconductor laser device with less decrease in external differential quantum efficiency, the laser device that is less likely to cause saturation of luminous efficiency, in a state of high power operation and that stably performs fundamental transverse-mode oscillation.
      SOLUTION: The semiconductor laser device includes a resonator structure that include a first clad layer formed on the substrate, an active layer, and a second cladding layer, wherein the second cladding layer has a stripe section 20 extending between the front-end surface that extracts the laser beam and a rear-end surface, arranged on a side opposite to the front-end surface. The stripe section 20 has a first region 20a arranged on the side of the front-end surface; a second region 20b arranged on the side of the rear-end surface; and a varying region 20c arranged between the first region 20a and the second region 20b, such that the varying region 20c varies in its width. The effective refractive index difference between the inside and the outside of the stripe section in the varying region 20c is smaller than that between the inside and the outside of the stripe section in the first region 20a.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题为了获得外部差分量子效率降低较少的半导体激光器件,在高功率操作状态下不太可能引起发光效率饱和的激光器件,并且稳定地执行基本横向 模式振荡。 解决方案:半导体激光器件包括谐振器结构,其包括形成在衬底上的第一覆盖层,有源层和第二覆层,其中第二覆层具有在前端 提取激光束的表面和布置在与前端表面相对的一侧的后端表面。 条状部分20具有布置在前端表面侧的第一区域20a; 布置在后端表面侧的第二区域20b; 以及布置在第一区域20a和第二区域20b之间的变化区域20c,使得变化区域20c的宽度变化。 变化区域20c中的条状部分的内侧和外部之间的有效折射率差小于第一区域20a中的条状部分的内部和外侧之间的有效折射率差。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Optical semiconductor element and its fabrication process
    • 光学半导体元件及其制造工艺
    • JP2008153260A
    • 2008-07-03
    • JP2006336800
    • 2006-12-14
    • Fujitsu LtdUniv Of Tokyo国立大学法人 東京大学富士通株式会社
    • HATORI NOBUAKIYAMAMOTO TAKAYUKIARAKAWA YASUHIKO
    • H01S5/12H01S5/223
    • H01S5/12B82Y20/00H01S5/0202H01S5/02284H01S5/028H01S5/0655H01S5/1203H01S5/1237H01S5/3412H01S2301/18
    • PROBLEM TO BE SOLVED: To provide an optical semiconductor element in which an end face can be formed at a target position with good reproducibility and decline in coupling efficiency with an optical fiber can be suppressed. SOLUTION: An active layer (18) is formed on a semiconductor substrate having a pair of end faces (15A, 15B) that face the opposite directions mutually. An upper clad layer (19) having a refractive index smaller than that of the active layer is formed on the active layer. A grating (25) is arranged in the upper clad layer on the opposite sides of a distribution feedback region of a waveguide region (22) having end regions (22B) defined at the opposite ends and the distribution feedback region (22A) defined internally and extending from one end face to the other end face of the semiconductor substrate. A low refractive index region (26) having a refractive index lower than that of the upper clad layer is arranged in the upper clad layer on each side of the end region of the waveguide region. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供可以以良好的再现性在目标位置形成端面的光半导体元件,并且可以抑制与光纤的耦合效率的降低。 解决方案:在具有相互面对相反方向的一对端面(15A,15B)的半导体衬底上形成有源层(18)。 在有源层上形成折射率小于有源层的折射率的上覆盖层(19)。 在具有在相对端限定的端部区域(22B)和内部限定的分布反馈区域(22A)的波导区域(22)的分布反馈区域的相对侧的上部包层中布置有光栅(25) 从半导体衬底的一端面延伸到另一端面。 折射率低于上包层的低折射率区域(26)布置在波导区域的端部区域的每一侧的上包层中。 版权所有(C)2008,JPO&INPIT