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    Semiconductor laser device and manufacturing method therefor
    3.
    发明授权
    Semiconductor laser device and manufacturing method therefor 失效
    半导体激光器件及其制造方法

    公开(公告)号：US07180925B2

    公开(公告)日：2007-02-20

    申请号：US10715025

    申请日：2003-11-18

    申请人： Yoshiaki Ueda ,  Keisuke Miyazaki ,  Kazuhiko Wada ,  Masaki Tatsumi ,  Taiji Morimoto

    发明人： Yoshiaki Ueda ,  Keisuke Miyazaki ,  Kazuhiko Wada ,  Masaki Tatsumi ,  Taiji Morimoto

    IPC分类号： H01S5/00

    CPC分类号： H01S5/2231 ,  H01S5/0655 ,  H01S5/222 ,  H01S5/4031 ,  H01S5/4087 ,  H01S2302/00

    摘要： A light confinement layer constructed of a semiconductor that has a refractive index different from that of p-type second cladding layers is formed to a small film thickness of not greater than 2 μm (about 0.5 μm) on the whole surface of ridge portions of two semiconductor lasers. Thus, the light confinement layer on the ridge portions is made roughly flat so as to be easily removable by etching. As a result, the exposure of p-type second cladding layers of the ridge portions due to deep etching is prevented to allow the confinement of light into the p-type cladding layers to be stably effected. A dielectric film is formed on the light confinement layer and reinforces the current constriction function lost by the reduction in the thickness of the light confinement layer.

    摘要翻译： 由具有与p型第二包覆层的折射率不同的折射率的半导体构成的光限制层在两个脊部的整个表面上形成为不大于2μm（约0.5μm）的小的膜厚度 半导体激光器 因此，脊部上的光限制层大致平坦，以便通过蚀刻易于移除。 结果，防止由于深蚀刻而引起的脊部的p型第二包覆层的曝光，从而能够稳定地对p型包层的光进行限制。 在光限制层上形成电介质膜，并且增强了通过光限制层的厚度减小而损失的电流收缩功能。

    Semiconductor laser device and manufacturing method therefor
    4.
    发明申请
    Semiconductor laser device and manufacturing method therefor 审中-公开
    半导体激光器件及其制造方法

    公开(公告)号：US20050018733A1

    公开(公告)日：2005-01-27

    申请号：US10891507

    申请日：2004-07-15

    申请人： Kazuhiko Wada ,  Keisuke Miyazaki ,  Taiji Morimoto ,  Yoshiaki Ueda ,  Masaki Tatsumi

    发明人： Kazuhiko Wada ,  Keisuke Miyazaki ,  Taiji Morimoto ,  Yoshiaki Ueda ,  Masaki Tatsumi

    IPC分类号： H01L21/306 ,  H01S3/14 ,  H01S5/00 ,  H01S5/20 ,  H01S5/22 ,  H01S5/223 ,  H01S5/323 ,  H01S5/343 ,  H01S5/40

    CPC分类号： B82Y20/00 ,  H01S5/2206 ,  H01S5/2231 ,  H01S5/3432 ,  H01S5/4031 ,  H01S5/4087 ,  H01S2304/04

    摘要： An n-type AlGaAs cladding layer of a first semiconductor laser 39 to be first formed on an n-type GaAs buffer layer 22 is constructed of a two-layer structure of a second n-type AlxGa1-xAs (x=0.500) cladding layer 23 and a first n-type AlxGa1-xAs (x=0.425) cladding layer 24. With this arrangement, in removing by etching the second n-type cladding layer 23 located on the n-type GaAs buffer layer 22 side with HF, no cloudiness occurs since the Al crystal mixture ratio x of the second n-type cladding layer 23 is 0.500, allowing mirror surface etching to be achieved. Moreover, by virtue of selectivity to GaAs, the etching automatically stops in the n-type GaAs buffer layer 22. Even in the above case, ellipticity can be improved by matching the vertical radiation angle θ⊥ to 36 degrees since the Al crystal mixture ratio x of the first n-type cladding layer 24 located on the AlGaAs multi-quantum well active layer 25 side is 0.425.

    摘要翻译： 首先形成在n型GaAs缓冲层22上的第一半导体激光器39的n型AlGaAs覆层由第二n型Al x Ga 1-x As（x = 0.500）包层的两层结构构成 23和第一n型Al x Ga 1-x As（x = 0.425）包覆层24.通过这种布置，通过用HF除去位于n型GaAs缓冲层22侧的第二n型包覆层23， 由于第二n型包覆层23的Al晶体混合比x为0.500，因此发生混浊，从而能够实现镜面蚀刻。 此外，由于对GaAs的选择性，在n型GaAs缓冲层22中蚀刻自动停止。即使在上述情况下，通过将垂直辐射角θ⊥与36度匹配可以提高椭圆率，因为Al晶体混合比 位于AlGaAs多量子阱有源层25一侧的第一n型覆层24的x为0.425。

    Semiconductor laser device fabricating method
    5.
    发明授权
    Semiconductor laser device fabricating method 有权
    半导体激光器件制造方法

    公开(公告)号：US06919217B2

    公开(公告)日：2005-07-19

    申请号：US10412297

    申请日：2003-04-14

    申请人： Keisuke Miyazaki ,  Kazuhiko Wada ,  Taiji Morimoto

    发明人： Keisuke Miyazaki ,  Kazuhiko Wada ,  Taiji Morimoto

    IPC分类号： G11B7/125 ,  H01S5/22 ,  H01S5/323 ,  H01S5/343 ,  H01S5/40 ,  H01L21/00

    CPC分类号： B82Y20/00 ,  H01S5/323 ,  H01S5/3432 ,  H01S5/4031 ,  H01S5/4087 ,  H01S2304/00

    摘要： An AlGaAs-based semiconductor laser 29 is formed on an n-type GaAs substrate 21, and thereafter, a non-doped GaAs protective layer 30 is formed. When the n-type substrate 21 is exposed by removing by etching a partial region of the AlGaAs-based semiconductor laser 29, an impurity Zn is prevented from evaporating from a p-type GaAs contact layer 28. The deterioration of the characteristic of contact with a p-type electrode as a consequence of a reduction in the carrier density of the p-type contact layer 28 can be prevented. Furthermore, the impurity evaporated from the p-type contact layer 28 can be prevented from readhering onto the exposed n-type substrate 21. A layer where the n-type GaAs substrate 21 and the readhering impurity are mixed with each other is not formed when an AlGaInP-based semiconductor laser 38 is succeedingly formed, and the reliability in long-term operation can be improved.

    摘要翻译： 在n型GaAs衬底21上形成AlGaAs半导体激光器29，然后形成非掺杂GaAs保护层30。 当通过蚀刻Al AlAs基半导体激光器29的局部区域去除n型衬底21时，防止杂质Zn从p型GaAs接触层28蒸发。 可以防止作为p型接触层28的载流子浓度降低的结果与p型电极接触的特性的劣化。 此外，可以防止从p型接触层28蒸发的杂质再次附着在露出的n型基板21上。 当形成AlGaInP基半导体激光器38时，不形成n型GaAs衬底21和再生杂质彼此混合的层，并且可以提高长期工作的可靠性。

    Semiconductor laser device having a multi-layer buffer layer
    6.
    发明授权
    Semiconductor laser device having a multi-layer buffer layer 有权
    具有多层缓冲层的半导体激光装置

    公开(公告)号：US07034341B2

    公开(公告)日：2006-04-25

    申请号：US10412280

    申请日：2003-04-14

    申请人： Keisuke Miyazaki ,  Kazuhiko Wada ,  Taiji Morimoto

    发明人： Keisuke Miyazaki ,  Kazuhiko Wada ,  Taiji Morimoto

    IPC分类号： H10L33/12

    CPC分类号： H01S5/22 ,  H01S5/2081 ,  H01S5/4087 ,  H01S2301/173

    摘要： An AlGaAs-based semiconductor laser 29 is formed on an n-type GaAs substrate 21 and thereafter etching is carried out until reaching an n-type AlGaAs clad layer 23 from the surface. Next, the n-type AlGaAs clad layer 23 is removed by etching with an etchant having selectivity to GaAs. Subsequently, the surface of an n-type GaAs buffer layer 22 is lightly etched. Thus, the n-type GaAs buffer layer 22 of the AlGaAs-based semiconductor laser 29 is left in a slightly abraded state on the n-type GaAs substrate 21, maintaining the flatness of the groundwork layer during growing an AlGaInP-based semiconductor laser 38 at the second time. Therefore, the flatness of the crystals of, in particular, an active layer grown at the second time can be improved, and the poor characteristics of the AlGaInP-based semiconductor laser 38 attributed to the poor flatness of the groundwork can be improved.

    摘要翻译： 在n型GaAs衬底21上形成AlGaAs半导体激光器29，然后进行蚀刻，直到从表面到达n型AlGaAs覆盖层23。 接下来，通过用对GaAs的选择性的蚀刻剂进行蚀刻来去除n型AlGaAs覆盖层23。 随后，轻蚀刻n型GaAs缓冲层22的表面。 因此，基于AlGaAs的半导体激光器29的n型GaAs缓冲层22在n型GaAs衬底21上处于略微磨损的状态，在生长AlGaInP基半导体激光器38期间保持基底层的平坦度 第二次 因此，可以提高特别是第二次生长的有源层的晶体的平坦度，并且可以提高归因于基础的平坦度差的AlGaInP基半导体激光器38的差的特性。

    Semiconductor laser element and monolithic two-wavelength semiconductor laser device
    9.
    发明申请
    Semiconductor laser element and monolithic two-wavelength semiconductor laser device 审中-公开
    半导体激光元件和单片双波长半导体激光器件

    公开(公告)号：US20060072641A1

    公开(公告)日：2006-04-06

    申请号：US11244392

    申请日：2005-10-06

    申请人： Keisuke Miyazaki ,  Masaki Tatsumi

    发明人： Keisuke Miyazaki ,  Masaki Tatsumi

    IPC分类号： H01S5/00

    CPC分类号： H01S5/22 ,  H01S5/0658 ,  H01S5/2219 ,  H01S5/2231 ,  H01S5/4031 ,  H01S5/4087

    摘要： In the semiconductor laser element and the monolithic two-wavelength semiconductor laser device, an active layer 6 is formed above an n-type GaAs substrate 1, and a p-type AlGaInP clad layer 8 is formed above the active layer 6. Furthermore, an n-type AlGaInP block layer 13 having a refractive index nearly equal to that of the p-type AlGaInP clad layer 8 is formed on the side of the ridge portion formed on the p-type AlGaInP clad layer 8.

    摘要翻译： 在半导体激光元件和单片双波长半导体激光器件中，在n型GaAs衬底1上方形成有源层6，在有源层6的上方形成p型AlGaInP覆盖层8。 此外，在形成在p型AlGaInP包覆层8上的脊部的一侧形成折射率几乎等于p型AlGaInP包覆层8的折射率的n型AlGaInP阻挡层13。

    Semiconductor laser device and fabricating method thereof
    10.
    发明授权
    Semiconductor laser device and fabricating method thereof 失效
    半导体激光器件及其制造方法

    公开(公告)号：US06618415B1

    公开(公告)日：2003-09-09

    申请号：US09651106

    申请日：2000-08-30

    申请人： Yoshinori Ohitsu ,  Keisuke Miyazaki ,  Yoshihisa Fujii

    发明人： Yoshinori Ohitsu ,  Keisuke Miyazaki ,  Yoshihisa Fujii

    IPC分类号： H01S500

    CPC分类号： H01S5/16 ,  H01S5/2222 ,  H01S5/2231

    摘要： Provided is a semiconductor laser device in which at least an n-type first cladding layer, an active layer and a p-type second cladding layer are formed on or above an n-type semiconductor substrate. An n-type current block layer having a stripe-shaped groove-like removed portion is formed on the second cladding layer and at least a p-type third cladding layer is formed on the current block layer including the stripe-shaped removed portion. The second cladding layer has a p-type C impurity concentration of 3×1017 cm−3 to 2×1018 cm−3.

    摘要翻译： 提供一种半导体激光器件，其中在n型半导体衬底上或其上形成至少n型第一覆盖层，有源层和p型第二覆盖层。 在第二包层上形成具有条形槽状去除部分的n型电流阻挡层，并且在包括条形去除部分的当前阻挡层上至少形成p型第三包覆层。 第二包层的p型C杂质浓度为3×10 17 cm -3〜2×10 18 cm -3。