Terraced substrate semiconductor laser
    81.
    发明授权
    Terraced substrate semiconductor laser 失效
    梯形衬底半导体激光器

    公开(公告)号:US4392227A

    公开(公告)日:1983-07-05

    申请号:US224821

    申请日:1981-01-13

    摘要: In a terraced substrate type semiconductor laser comprising a semiconductor substrate (11) having a step (T) on its principal face, an active layer (13) with an oblique central region (131), defined between two bendings, as stripe-shaped lasing region near the foot of the step part (T) of the substrate (11), and a clad layer (14) formed on the active layer (13),The device is characterized by comprising a current injection region (22) which is formed by diffusing an impurity, in a manner that a diffusion front corner (221) penetrate the clad layer (14) and contacts the oblique lasing region (131) thereby to form the current injection path (221) very narrow and closely to the central part of the stripe-shaped lasing region (13), thereby effectively confining the injected current to the lasing region (131) and hence attaining very low threshold current and very high external differential quantum efficiency.

    摘要翻译: 在包括在其主面上具有台阶(T)的半导体衬底(11)的梯形衬底型半导体激光器中,具有定义在两个弯曲部之间的倾斜中心区域(131)的有源层(13)作为条形激光 (11)的台阶部(T)的脚附近的区域,以及形成在有源层(13)上的包层(14)。该器件的特征在于包括形成有电流注入区域(22)的电流注入区域 通过以扩散前角(221)穿透包覆层(14)并与斜激光区域(131)接触的方式扩散杂质,从而形成非常窄且紧密相对于中心部分的电流注入路径(221) 由此有效地将注入的电流限制到激光区域(131),从而获得非常低的阈值电流和非常高的外部微分量子效率。

    Terraced substrate semiconductor laser
    82.
    发明授权
    Terraced substrate semiconductor laser 失效
    梯形衬底半导体激光器

    公开(公告)号:US4360920A

    公开(公告)日:1982-11-23

    申请号:US185922

    申请日:1980-09-10

    CPC分类号: H01S5/2238

    摘要: In a semiconductor laser a semiconductor substrate has a terrace structure in a manner to have an upper face, a lower face, and a step part disposed between the upper and lower faces. A clad layer is formed on the semiconductor substrate having an upper part, a lower part, and a central part. The upper part is on the upper face and the step part. The lower part is on the lower face and the central part connecting the upper and lower parts and is thicker than the upper and lower parts in a manner that a step-shaped downward-bending surface of the central part is located above the lower face. An active layer formed on the clad layer includes an upper lateral part, a lower lateral part, a center part connecting the upper and lower lateral parts, with a lasing region being a part of the upper lateral part which is near a bending part of the step-shaped downward-bending surface.

    摘要翻译: 在半导体激光器中,半导体衬底具有以上表面,下表面和设置在上表面和下表面之间的台阶部分的方式设置的露台结构。 在具有上部,下部和中心部的半导体基板上形成包覆层。 上部位于上表面和台阶部分。 下部位于下表面,中央部分连接上部和下部,并且比中部的台阶向下弯曲表面位于下表面上方更厚于上部和下部。 形成在包层上的有源层包括上侧部分,下侧部分,连接上下侧部分的中心部分,激光区域是上侧部分的靠近弯曲部分的一部分 台阶向下弯曲面。

    Primer compositions
    84.
    发明授权
    Primer compositions 失效
    底漆组合物

    公开(公告)号:US4287114A

    公开(公告)日:1981-09-01

    申请号:US91761

    申请日:1979-11-06

    CPC分类号: C09D183/04

    摘要: The adhesive bonding of a silicone rubber to a metal surface can be very much improved by the use of the inventive primer composition, in particular, with respect to the heat resistance and anti-oil resistance of the adhesion. The inventive primer composition comprises (a) a substantially linear diorganopolysiloxane of gum-like consistency free from aliphatic unsaturation, (b) an organopolysiloxane with the organic group/silicon atom molar ratio of 1.9 to 2.3 and having a limited amount of vinyl groups directly bonded to the silicon atoms and a viscosity of 5 to 10,000 centistokes at 25.degree. C., (c) an organopolysiloxane resin with the molar ratio of organic groups/silicon atoms of 0.5 to 1.7, (d) an organosilane compound such as vinyl trimethoxysilane or vinyl tris(2-methoxyethoxy) silane, (e) a finely divided silica filler, (f) an organic peroxide and (g) a curing agent for silicone resins, all in limited weight proportions.

    摘要翻译: 通过使用本发明的底漆组合物,特别是关于粘合性的耐热性和抗油性,可以使硅橡胶与金属表面的粘合粘合力得到非常大的改善。 本发明的底漆组合物包含(a)不含脂肪族不饱和度的胶状稠度的基本上线性的二有机聚硅氧烷,(b)有机基/硅原子摩尔比为1.9至2.3的有机聚硅氧烷,并且具有有限量的直接键合的乙烯基 在25℃下粘度为5〜10000厘沲,(c)有机基团/硅原子摩尔比为0.5〜1.7的有机聚硅氧烷树脂,(d)有机硅烷化合物如乙烯基三甲氧基硅烷或 乙烯基三(2-甲氧基乙氧基)硅烷,(e)细碎二氧化硅填料,(f)有机过氧化物和(g)有机硅树脂的固化剂,均为有限重量比。

    Elastomer compositions
    88.
    发明授权
    Elastomer compositions 失效
    弹性体组合物

    公开(公告)号:US4150010A

    公开(公告)日:1979-04-17

    申请号:US877822

    申请日:1978-02-15

    摘要: The invention provides a novel elastomer composition capable of giving vulcanized rubber products with superior solvent resistance, oil resistance, heat resistance and other properties. The composition is formulated with a polymer blend of an ethylene-propylene copolymeric elastomer and a specific organopolysiloxane having certain amount of mercapto-substituted organic groups bonded to the silicon atoms as the base component admixed with a filler and a crosslinking agent or a vulcanizing agent.

    摘要翻译: 本发明提供一种新型的弹性体组合物,其能够提供具有优异的耐溶剂性,耐油性,耐热性等特性的硫化橡胶制品。 用乙烯 - 丙烯共聚物弹性体和具有一定量的巯基取代的有机基团的键合到硅原子上作为基础组分与填料和交联剂或硫化剂混合的聚合物共混物配制组合物。

    Silicone rubber compositions
    89.
    发明授权
    Silicone rubber compositions 失效
    硅橡胶组合物

    公开(公告)号:US4045390A

    公开(公告)日:1977-08-30

    申请号:US643795

    申请日:1975-12-23

    CPC分类号: C08L83/10 Y10S528/901

    摘要: The organopolysiloxane compositions comprising (a) a linear diorganopolysiloxane having a block structure composed of alternately linked two kinds of blocks of dimethylsiloxane units on one hand and of dimethylsiloxane units and methylvinylsiloxane units on the other hand, (b) a silica filler, (c) a methylhydrogenpolysiloxane as a crosslinking agent, and (d) a platinum catalyst for accelerating crosslinking by addition reaction. Cured silicone rubber elastomers obtained from the composition have very excellent mechanical properties, especially tear strength.

    摘要翻译: 有机聚硅氧烷组合物包含(a)一方面由二甲基硅氧烷单元交替连接的两种嵌段和二甲基硅氧烷单元和甲基乙烯基硅氧烷单元组成的嵌段结构的线性二有机聚硅氧烷,(b)二氧化硅填料,(c) 作为交联剂的甲基氢聚硅氧烷,(d)通过加成反应加速交联的铂催化剂。 由组合物获得的固化硅橡胶弹性体具有非常优异的机械性能,特别是撕裂强度。