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    • 91. 发明授权
    • Gain-coupled distributed feedback semiconductor laser device and production method therefor
    • 增益耦合分布反馈半导体激光器件及其制作方法
    • US07016391B2
    • 2006-03-21
    • US10221363
    • 2001-02-07
    • Koji Takahashi
    • Koji Takahashi
    • H01S3/08H01S5/00
    • B82Y20/00H01S5/1228H01S5/1231H01S5/3202H01S5/32366H01S5/34306H01S5/34313H01S5/3432H01S5/3434H01S5/34346H01S5/3438
    • The presence or absence and the intensity of refractive index distribution are easily controlled with high reproducibility without depending on the fabricating process accuracy. InGaAs well layers (14a) and (14b), which have a narrow bandgap and a high refractive index, are enclosed by a lower barrier layer (13), an intermediate barrier layer (15), an upper barrier layer (16) and a buried layer (18) of GaAsN-based materials of a wide bandgap. Then, by adjusting the nitrogen crystal mixture ratio of the GaAsN-based materials that constitute the barrier layers (13), (15) and (16) and the buried layer (18), the presence or absence and the intensity of the refractive index distribution are controlled. Thus, the refractive index distribution is easily controlled with high reproducibility without considering the configuration of a diffraction grating (17), a refractive index balance with respect to the buried layer (18) and so on, i.e., without depending on the fabricating process accuracy.
    • 折射率分布的存在或不存在和强度易于以高再现性进行控制,而不依赖于制造工艺的精度。 具有窄带隙和高折射率的InGaAs阱层(14a)和(14b)被下阻挡层(13),中间阻挡层(15),上阻挡层(16), 以及宽带隙的GaAsN基材料的掩埋层(18)。 然后,通过调整构成阻挡层(13),(15)和(16)和掩埋层(18)的GaAsN基材料的氮结晶混合比,折射率的存在或不存在和强度 分配受到控制。 因此,不考虑衍射光栅(17)的构造,相对于掩埋层(18)的折射率平衡等,即不依赖于制造工艺精度,可以以高再现性容易地控制折射率分布 。
    • 94. 发明授权
    • Semiconductor laser device and optical disk recording and reproducing apparatus
    • 半导体激光装置和光盘记录和再现装置
    • US06775311B2
    • 2004-08-10
    • US10241838
    • 2002-09-12
    • Shuichi Hirukawa
    • Shuichi Hirukawa
    • H01S500
    • B82Y20/00G11B7/127H01S5/2045H01S5/2231H01S5/3403H01S5/34326H01S5/3434H01S5/34346
    • There is provided a semiconductor laser device implementing a single transverse mode oscillation in an oscillation wavelength of 780 nm band and also having high reliability and long life in high-output driving state, and an optical disk recording and reproducing apparatus with use of the semiconductor laser device. A multiple quantum well active layer 105 is composed of InGaAsP, and a first cladding layer 103, a second cladding layer 107, a third cladding layer 109, and a first current blocking layer 112 are structured from III-V group compound semiconductor containing only As as V group element. Inside the first current blocking layer 112, a hollow portion 130 is provided in the vicinity of and approximately parallel to the ridge stripe-shaped third cladding layer 109.
    • 提供了在780nm波段的振荡波长中实现单横波振荡并且在高输出驱动状态下具有高可靠性和长寿命的半导体激光器件,以及使用半导体激光器的光盘记录和再现装置 设备。 多量子阱有源层105由InGaAsP构成,第一包层103,第二包层107,第三包层109和第一电流阻挡层112由仅包含As的III-V族化合物半导体构成 作为V组元素。 在第一电流阻挡层112的内部,在脊条状的第三包覆层109的附近并且大致平行地设置有中空部130。
    • 96. 发明申请
    • System and method using migration enhanced epitaxy for flattening active layers and the mechanical stabilization of quantum wells associated with vertical cavity surface emitting lasers
    • 使用迁移增强外延来平坦化有源层的系统和方法以及与垂直腔表面发射激光器相关联的量子阱的机械稳定性
    • US20030219917A1
    • 2003-11-27
    • US10352293
    • 2003-01-27
    • Ralph H. JohnsonVirgil J. Blasingame
    • H01L021/00
    • B82Y20/00H01L33/007H01S5/18308H01S5/3201H01S5/32358H01S5/32366H01S5/34H01S5/3403H01S5/3406H01S5/34306H01S5/34313H01S5/34346H01S5/34353H01S2302/00
    • Methods and Systems producing flattening layers associated with nitrogen-containing quantum wells and to prevent 3-D growth of nitrogen containing layers using high As fluxes. MEE (Migration Enhanced Epitaxy) is used to flatten layers and enhance smoothness of quantum wells interfaces and to achieve narrowing of the spectrum of light emitted from nitrogen containing quantum wells. MEE is performed by alternately depositing single atomic layers of group III and V before, and/or after, and/or in-between quantum wells. Where GaAs is used, the process can be accomplished by alternately opening and closing Ga and As shutters in an MBE system, while preventing both from being open at the same time. Where nitrogen is used, the system incorporates a mechanical means of preventing nitrogen from entering the MBE processing chamber, such as a gate valve. The gate valve allows the nitrogen source to be completely cut-off from the chamber during non-nitrogen processing steps to achieve the flattening layers described herein. In at least nitrogen containing layers, 3-dimensional growth is also reduced by using high arsenic fluxes, and by using substantially As4 as the main constituent of the arsenic flux.
    • 制备与含氮量子阱相关的扁平层的方法和系统,并且使用高As助熔剂来防止含氮层的3-D生长。 MEE(迁移增强外延)用于平坦化层并增强量子阱界面的平滑度,并实现从含氮量子阱发射的光的光谱变窄。 通过在量子阱之间,之前和/或之后交替沉积III族和V族的单一原子层来执行MEE。 在使用GaAs的情况下,可以通过在MBE系统中交替地打开和关闭Ga和As快门来实现该过程,同时防止两者同时打开。 在使用氮气的情况下,该系统包含防止氮气进入MBE处理室(例如闸阀)的机械装置。 在非氮处理步骤期间,闸阀允许氮源与室完全切断以实现本文所述的扁平化层。 在至少含氮层中,通过使用高砷通量,并且通过使用基本上As 4作为砷通量的主要成分,也可以降低3维生长。