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    • 21. 发明授权
    • Multi-tip semiconductor laser
    • 多尖端半导体激光器
    • US5299218A
    • 1994-03-29
    • US914078
    • 1992-07-16
    • Yuzaburo BanTouru SaitohTadasi NarusawaKiyoshi Ohnaka
    • Yuzaburo BanTouru SaitohTadasi NarusawaKiyoshi Ohnaka
    • H01S3/16H01J21/10H01S3/06H01S3/0959H01S5/00H01S5/04H01S3/19
    • H01S5/04H01J21/105
    • A multi-tip semiconductor laser comprises: a substrate; a cladding layer; an active layer formed of alkali-halide crystal on the cladding layer; at least a field emission tip formed on a surface of the substrate to have a substantially corn shape, the field emission tip being so arranged to confront the active layer; a vacuum space structure for providing a space between substrate and the cladding layer with the field emission tip confronting the active layer and for maintaining the space in a vacuum state; and an electrode structure for a producing electrostatic field between the field emission tip and the same in response to an external voltage supply such that the field emission tip emits an electron beam toward the active layer. The active layer may be doped and be made of organic crystal. It may further comprises a conducting layer covering at least a portion of said active layer. The active layer may be formed in a channel formed in the anode layer. The active layer may be formed in a capillary buried in a channel formed in the anode layer. This multi-tip semiconductor laser emits blue laser light.
    • 多尖端半导体激光器包括:基板; 包层; 在包层上形成由碱卤化物晶体形成的活性层; 至少形成在所述基板的表面上以具有大致玉米形状的场致发射尖端,所述场发射尖端被布置为面对所述有源层; 真空空间结构,用于在衬底和包层之间提供与活性层相对的场发射尖端并用于将空间保持在真空状态的空间; 以及用于响应于外部电压供应而在场发射尖端与其之间产生静电场的电极结构,使得场发射尖端朝向有源层发射电子束。 有源层可以掺杂并由有机晶体制成。 它还可以包括覆盖所述有源层的至少一部分的导电层。 有源层可以形成在形成在阳极层中的沟道中。 活性层可以形成在掩埋在阳极层中形成的沟道中的毛细管中。 该多尖端半导体激光器发射蓝色激光。
    • 22. 发明授权
    • Semiconductor laser
    • 半导体激光器
    • US5029175A
    • 1991-07-02
    • US437934
    • 1989-11-17
    • Kiyoshi OhnakaMototsugu Ogura
    • Kiyoshi OhnakaMototsugu Ogura
    • H01S5/22H01S5/223H01S5/227H01S5/323
    • H01S5/227H01S5/2231H01S5/2205H01S5/2209H01S5/221H01S5/2211H01S5/2214H01S5/2216H01S5/2275H01S5/32325
    • In a semiconductor laser, an AlGaInP cladding layer of one conductive type, an active layer, and an AlGaInP cladding layer of other conductive type greater in thickness in stripes are formed on a GaAs substrate, and an insulating film, AlGaInP or amorphous layer smaller in refractive index than the AlGaInP cladding layer are formed at both sides of the stripes, wherein the light can be confined and guided also in the direction parallel to the active layer, and the light can be index-guided both in the direction parallel to the active layer and in the direction vertical thereto, so that a laser having an extremely smaller astigmatism may be presented. In addition, the current blocking layer disposed at the outer side of the insulating film, AlGaInP or amorphous layer is high in thermal conductivity, and the heat generated in the vicinity of the active layer may be efficiently released.
    • 在半导体激光器中,在GaAs衬底上形成厚度更大的导体类型,有源层和其它导电类型的AlGaInP包层的AlGaInP包覆层,并且在GaAs衬底上形成绝缘膜,AlGaInP或非晶层 折射率比AlGaInP包层形成在条纹的两侧,其中光可以在平行于有源层的方向上被限制和引导,并且光可以在平行于活动的方向上被引导引导 层并且在垂直于其的方向上,使得可以呈现具有非常小的散光的激光。 此外,设置在绝缘膜的外侧的电流阻挡层AlGaInP或非晶层的导热性高,并且可以有效地释放在活性层附近产生的热量。
    • 28. 发明授权
    • Semiconductor laser with improved oscillation wavelength reproducibility
    • 具有改善振荡波长再现性的半导体激光器
    • US5345463A
    • 1994-09-06
    • US45423
    • 1993-04-13
    • Masaya MannohKiyoshi Ohnaka
    • Masaya MannohKiyoshi Ohnaka
    • H01S5/00H01S5/223H01S5/30H01S5/32H01S5/323H01S3/19
    • H01S5/32325H01S5/305H01S5/2231H01S5/3211
    • A lateral mode control type of semiconductor laser has a high-yield structure having a long life and improved oscillation wavelength reproducibility. A diffusion limit layer formed of an undoped Ga.sub.0.5 In.sub.0.5 P layer and an undoped (Al.sub.0.6 Ga.sub.0.4).sub.0.5 In.sub.0.5 P layer is provided between a p-(Al.sub.0.6 Ga.sub.0.4).sub.0.5 In.sub.0.5 P clad layer and an undoped Ga.sub.0.5 In.sub.0.5 P active layer. The diffusion limit layer has a diffusion coefficient smaller than that of the clad layer. Impurity Zn diffused from the p-(Al.sub.0.6 Ga.sub.0.4).sub.0.5 In.sub.0.5 P clad layer during crystal growth or working is trapped in the undoped Ga.sub.0.5 In.sub.0.5 P layer almost entirely. A part of the impurity Zn diffuses in the undoped (Al.sub.0.6 Ga.sub.0.4).sub.0.5 In.sub.0.5 P layer thereunder but does not reach the undoped Ga.sub.0.5 In.sub.0.5 P active layer.
    • 半导体激光器的横向模式控制型具有寿命长,振荡波长再现性提高的高产率结构。 由未掺杂的Ga0.5In0.5P层和未掺杂的(Al0.6Ga0.4)0.5In0.5P层形成的扩散极限层设置在p(Al 0.6 Ga 0.4)0.5 In 0.5 P包层和 未掺杂的Ga0.5In0.5P有源层。 扩散极限层的扩散系数小于包覆层的扩散系数。 在晶体生长或加工期间从p-(Al0.6Ga0.4)0.5In0.5P包覆层扩散的杂质Zn几乎完全被捕获在未掺杂的Ga 0.5 In 0.5 P层中。 杂质Zn的一部分在其下面的未掺杂(Al 0.6 Ga 0.4)0.5 In 0.5 P层中扩散,但未到达未掺杂的Ga 0.5 In 0.5 P活性层。
    • 29. 发明授权
    • Anti-guided phase-locked array and manufacturing method therefor
    • 反引导锁相阵列及其制造方法
    • US5323405A
    • 1994-06-21
    • US953359
    • 1992-09-30
    • Satoshi KamiyamaKiyoshi Ohnaka
    • Satoshi KamiyamaKiyoshi Ohnaka
    • H01L27/15H01S5/00H01S5/042H01S5/20H01S5/40H01S3/082H01S3/098H01S3/25
    • H01S5/4031H01S5/2059
    • A phase-locked laser array comprising a plurality of element regions for passing electric current into an active layer; and inter-element regions formed between the element regions. Each of the inter-element regions is so formed as to have two regions, i.e. a non-diffusion region at the center thereof and a diffusion regions disposed on both sides thereof, thereby rendering the refractive index in the non-diffusion region higher than that in the diffusion regions. The method of manufacturing the phase-locked laser array which is characterized by including a step growing an optical waveguide layer of superlattice on a portion of a second clad layer while diffusing impurities doped in the second clad layer into said optical waveguide layer, thereby forming a diffusion regions on both sides of the inter-element region.
    • 一种锁相激光器阵列,包括用于将电流传递到有源层中的多个元件区域; 以及形成在元件区域之间的元件间区域。 每个元件间区域被形成为具有两个区域,即其中心处的非扩散区域和设置在其两侧的扩散区域,从而使非扩散区域中的折射率高于不扩散区域的折射率 在扩散区域。 制造锁相激光器阵列的方法,其特征在于包括在第二包覆层的一部分上生长超晶格的光波导层的步骤,同时将掺杂在第二包层中的杂质扩散到所述光波导层中,从而形成 扩散区域在元件间区域的两侧。
    • 30. 发明授权
    • Semiconductor laser and manufacturing method thereof
    • 半导体激光器及其制造方法
    • US5144633A
    • 1992-09-01
    • US704969
    • 1991-05-23
    • Kiyoshi OhnakaYuzaburo BanIsao Kidoguchi
    • Kiyoshi OhnakaYuzaburo BanIsao Kidoguchi
    • H01S5/20H01S5/22H01S5/223H01S5/323
    • H01S5/2231H01S5/2059H01S5/2205H01S5/32325
    • A hetero structure semiconductor laser of inner stripe type comprises an (Al.sub.x Ga.sub.1-x).sub.0.5 In.sub.0.5 P first cladding layer of a first conductivity type, a Ga.sub.0.5 In.sub.0.5 P or (Al.sub.x Ga.sub.1-x).sub.0.5 In.sub.0.5 P active layer, an (Al.sub.x Ga.sub.1-x).sub.0.5 In.sub.0.5 P second cladding layer of a second conductivity type different from the first conductivity type, an AlInP or (Al.sub.x Ga.sub.1-x).sub.0.5 In.sub.0.5 P confinement layer or a SiO.sub.2 having a stripe-like opening and having a refractive index lower than that of the first cladding layer, and an upper cladding layer having a band gap larger than that of the first cladding layer having a refractive index lower than that of the second cladding layer are formed successively on a GaAs substrate. Further, the width of the active layer may be narrowed as a stripe-like structure. Thus, astigmatism of a semiconductor laser becomes smaller and the threshold value of laser action becomes smaller. The manufacturing methods of such a semiconductor laser are also disclosed.
    • 内条型的异质结构半导体激光器包括第一导电类型的(Al x Ga 1-x)0.5 In 0.5 P第一包层,Ga 0.5 In 0.5 P或(Al x Ga 1-x)0.5 In 0.5 P活性层,( Al x Ga 1-x)0.5 In 0.5 P第二导电类型的不同于第一导电类型的第二包层,AlInP或(Al x Ga 1-x)0.5 In 0.5 P限制层或具有条状开口并具有折射率 指数低于第一包覆层的折射率,并且在GaAs衬底上依次形成具有比第二包覆层的折射率低的第一包层的带隙大的带隙的上包层。 此外,活性层的宽度可以变窄为条状结构。 因此,半导体激光器的像散变小,激光作用的阈值变小。 还公开了这种半导体激光器的制造方法。