Light emitting apparatus
    31.
    发明公开
    Light emitting apparatus 失效
    Lichtemittierende Vorrichtung

    公开(公告)号:EP0840380A2

    公开(公告)日:1998-05-06

    申请号:EP97306740.8

    申请日:1997-09-02

    IPC分类号: H01L31/12 H01S3/025 H01S3/085

    摘要: A light emitting apparatus having a surface emitting laser (120) including a substrate (100), a first reflection layer (122), an active layer (123) and a second reflection layer (127) stacked successively on the substrate (100), first and second electrodes (110, 130) formed respectively on the lower surface of the substrate (100) and a portion of the upper surface of the second reflective layer (127), to emit light in the direction of the stacked layers, and a monitoring photodetector (150) stacked on the second reflection layer (127) so as to detect the amount of the emitted light from the surface emitting laser (120), is provided. The monitoring photodetector (150) includes first semiconductor material layer (151), an absorbing layer (157) and second semiconductor material layer (158) stacked successively on the second reflection layer, a third electrode formed on the second semiconductor layer to output detecting signals of the monitoring photodetector (150), and a controlling layer (152) formed on the bottom of the absorbing layer (157) and which intercepts some of the incident light.

    摘要翻译: 一种具有表面发射激光器(120)的发光装置,其包括在基板(100)上依次层叠的基板(100),第一反射层(122),有源层(123)和第二反射层(127) 分别形成在基板(100)的下表面和第二反射层(127)的上表面的一部分上的第一和第二电极(110,130)沿堆叠层的方向发光,以及 提供了堆叠在第二反射层(127)上以便检测来自表面发射激光器(120)的发射光量的监视光电检测器(150)。 监测光电检测器(150)包括在第二反射层上依次层叠的第一半导体材料层(151),吸收层(157)和第二半导体材料层(158),形成在第二半导体层上的第三电极,以输出检测信号 的监视光检测器(150),以及形成在吸收层(157)的底部并且拦截一些入射光的控制层(152)。

    Laser-based light source
    33.
    发明公开
    Laser-based light source 失效
    基于激光的光源

    公开(公告)号:EP0786836A3

    公开(公告)日:1997-10-29

    申请号:EP97300439.3

    申请日:1997-01-24

    摘要: An integrated laser-based light source (300, 320, 340, 350, 500), which generates an output light beam (119) having a controlled intensity, comprises a light sensor (111, 351), a laser (101), a convex beam-splitting surface (345, 545), and a package (105, 501) that includes a header (103). The light sensor generates an electrical signal representing an intensity of light energy falling on it, and is mounted on the header. The laser has one and only one light-emitting face (109) from which a light beam is radiated as a radiated light beam (107). The laser is mounted in the package adjacent the light sensor with the light-emitting face substantially parallel to the light-receiving face of the light sensor. The convex beam-splitting surface reflects a fraction of the radiated light beam towards the light sensor as a reflected light beam, and transmits the remainder of the radiated light beam as the output light beam. The convex beam-splitting surface is supported in the radiated light beam by the package.

    摘要翻译: 一种产生具有受控强度的输出光束(119)的集成的基于激光的光源(300,320,340,350,500)包括光传感器(111,351),激光器(101), (345,545)以及包括头部(103)的封装(105,501)。 光传感器产生表示落在其上的光能强度的电信号,并安装在头部上。 该激光器具有一个并且仅仅一个光发射面(109),从该光发射面(109)发射光束作为辐射光束(107)。 激光器安装在光传感器附近的封装中,发光面基本平行于光传感器的光接收面。 凸形分束表面将一部分辐射光束作为反射光束反射向光传感器,并将所辐射的光束的其余部分作为输出光束透射。 凸包分束表面由包装支撑在辐射光束中。

    Integrated laser-based light source
    34.
    发明公开
    Integrated laser-based light source 失效
    集成的基于激光的光源

    公开(公告)号:EP0786837A2

    公开(公告)日:1997-07-30

    申请号:EP97300440.1

    申请日:1997-01-24

    摘要: An integrated laser-based light source (100,100A-100C,200,250,300,320,340,350,500,600,620,700,720,800,900), which generates an output light beam (119,819) having a controlled intensity, comprises a package (105) in which are mounted a laser (101, 801), a light sensor (111, 811) and a coupler (114, 314A-314D, 514, 614, 714, 814, 914). The laser has one and only one light-emitting face (e.g., 109) from which a light beam is radiated as a radiated light beam (107). The light sensor generates an electrical signal representing the intensity of light energy falling it. The coupler couples a fraction (117, 717, 917) of the radiated light beam to the light sensor, and provides the remainder of the radiated light beam as the output light beam. Since the light coupled to the light sensor by the coupler is a fraction of the radiated light beam, the electrical signal generated by the light sensor also represents the intensities of the radiated light beam and of the output light beam. A suitable control circuit (127, 827), when fed with the electrical signal generated by the light sensor, can control the laser current to hold the electrical signal generated by the light sensor to a predetermined value that corresponds to the output light beam having a predetermined intensity.

    摘要翻译: 产生具有受控强度的输出光束(119,819)的集成的基于激光的光源(100,100A-100C,200,250,300,320,340,350,500,600,620,700,720,800,900)包括其中安装有激光器(101,801)的封装(105),光 传感器(111,811)和耦合器(114,314A-314D,514,614,714,814,914)。 该激光器具有一个并且仅仅一个发射面(例如109),从该发射面发射光束作为辐射光束(107)。 光传感器产生表示落在其上的光能强度的电信号。 该耦合器将辐射光束的一部分(117,717,917)耦合到光传感器,并提供辐射光束的其余部分作为输出光束。 由于通过耦合器耦合到光传感器的光是辐射光束的一小部分,所以由光传感器产生的电信号也表示辐射光束和输出光束的强度。 合适的控制电路(127,827)在被馈送有由光传感器产生的电信号时可以控制激光电流以将由光传感器产生的电信号保持为预定值,该预定值对应于具有 预定强度。

    Laser-based light source
    35.
    发明公开
    Laser-based light source 失效
    Laserlichtquelle

    公开(公告)号:EP0786836A2

    公开(公告)日:1997-07-30

    申请号:EP97300439.3

    申请日:1997-01-24

    摘要: An integrated laser-based light source (300, 320, 340, 350, 500), which generates an output light beam (119) having a controlled intensity, comprises a light sensor (111, 351), a laser (101), a convex beam-splitting surface (345, 545), and a package (105, 501) that includes a header (103). The light sensor generates an electrical signal representing an intensity of light energy falling on it, and is mounted on the header. The laser has one and only one light-emitting face (109) from which a light beam is radiated as a radiated light beam (107). The laser is mounted in the package adjacent the light sensor with the light-emitting face substantially parallel to the light-receiving face of the light sensor. The convex beam-splitting surface reflects a fraction of the radiated light beam towards the light sensor as a reflected light beam, and transmits the remainder of the radiated light beam as the output light beam. The convex beam-splitting surface is supported in the radiated light beam by the package.

    摘要翻译: 产生具有受控强度的输出光束(119)的集成的基于激光的光源(300,320,340,350,500)包括光传感器(111,351),激光器(101), 凸起分束表面(345,545)和包括头部(103)的包装(105,501)。 光传感器产生表示落在其上的光能强度的电信号,并安装在接头上。 激光器具有仅一个发光面(109),作为辐射光束(107)照射光束。 激光器安装在邻近光传感器的封装中,其发光面基本上平行于光传感器的光接收面。 凸分光表面将作为反射光束的辐射光束的一部分反射向光传感器,并将发射的光束的其余部分作为输出光束。 凸起的分束表面通过封装支撑在辐射光束中。

    Optical head
    36.
    发明公开
    Optical head 失效
    光学头

    公开(公告)号:EP0740294A1

    公开(公告)日:1996-10-30

    申请号:EP95106197.7

    申请日:1995-04-26

    IPC分类号: G11B11/10 G11B7/12 G11B7/135

    摘要: In an optical head, a light emitting element emits an optical beam, and the beam is condensed by a condensing element onto an information recording medium. A first plate beam-splitting element has a splitting ratio of P polarization to S polarization, and it splits at least a part of the beam reflected by the information recording medium along a direction different from that of a direction returning to the light emitting element. A second plate beam-splitting element is provided in parallel to the first plate beam-splitting element, and it splits the beam split by the first plate beam-splitting element into at least two beams having polarization planes perpendicular to each other. The two beams are detected by a pair of photosensors. Because the first and second beam-splitting elements are set in parallel to each other, an optical path from the light emitting element to the information recording medium is separated from that of a reflected beam from the medium with a very small angle, and the optical elements can be located at adjacent positions to each other. Thus, the optical head can be made compact to a large extent. Further, the optical head can be sealed for high reliability.

    摘要翻译: 在光学头中,发光元件发射光束,并且该光束由聚光元件会聚到信息记录介质上。 第一板分束元件具有P偏振与S偏振的分束比,并且将由信息记录介质反射的光束的至少一部分沿与返回到发光元件的方向不同的方向分开。 第二板分束元件与第一板分束元件平行地设置,并且将由第一板分束元件分离的分束分成至少两个具有彼此垂直的偏振面的束。 两束光由一对光电传感器检测。 因为第一和第二分束元件彼此平行设置,所以从发光元件到信息记录介质的光路与来自介质的反射光束以非常小的角度分开,并且光学 元素可以位于彼此相邻的位置。 因此,可以使光学头在很大程度上变得紧凑。 此外,光学头可以被密封以获得高可靠性。

    Optische Sende- und Empfangseinrichtung mit einem oberflächenemittierenden Laser
    38.
    发明公开

    公开(公告)号:EP0713112A1

    公开(公告)日:1996-05-22

    申请号:EP95112444.5

    申请日:1995-08-08

    IPC分类号: G02B6/42 G02B6/43

    摘要: Bei obigen Einrichtungen ist eine genaue Justierung sehr wichtig; die Einrichtungen sollten jedoch sehr kompakt sein. Es genügt nicht, die Silizium-Ätztechnik für die Genauigkeit auszunutzen.
    Das optische Sendeelement (LD) befindet sich auf einem ersten Träger (T1), das optische Empfangselement (PD) und die Übertragungsfaser (Fa) auf einem dritten Träger. Dazwischen ist ein zweiter Träger (T2) vorgesehen, der für die Wellenlänge des vom Sendeelement (LD) ausgesendeten Lichts durchlässig ist. Die Träger sind durch anisotropes Ätzen strukturiert, um die Aufnahme der einzelnen Komponenten zu ermöglichen. Außerdem liegen die Träger flach aufeinander und können so justiert werden. Eine Monitordiode (MD) ist vorgesehen.
    Anwendung der Anordnung in allen Übertragungssystemen mit Lichtwellenleitern.

    摘要翻译: 发送和接收设备具有发送元件,例如, 由第三载体(T3)支撑的第一载体(T1)和接收元件(PD)和传输光纤(Fa)支持的垂直腔表面发射激光器(VCSEL),在第二载体(T2)之间 第一和第三载体。 第二载体对于由传输元件发射的光波长是透明的,其中在第一载体和第二载体之间的界面处容纳监测二极管(MD)的凹部。

    Independently addressable semiconductor diode lasers with integral low loss passive waveguides
    40.
    发明公开
    Independently addressable semiconductor diode lasers with integral low loss passive waveguides 失效
    可单独寻址的半导体激光二极管,集成verlustaremen无源波导。

    公开(公告)号:EP0602811A1

    公开(公告)日:1994-06-22

    申请号:EP93309439.3

    申请日:1993-11-25

    申请人: XEROX CORPORATION

    发明人: Paoli, Thomas L.

    IPC分类号: H01S3/00 H01S3/25 H01S3/025

    摘要: Within a monolithic semiconductor structure (100), passive waveguides (98) couple co-axially offset generation waveguides (94) for generating light waves to mirrors. The passive waveguides (98) can also couple detecting regions (96; Fig. 10) for measuring the light intensity within the laser cavity and adjustable absorption regions (126; Fig. 11) for tuning the wavelength (λ₁-λ₄) of the lightwaves generated by the generation waveguides (94).

    摘要翻译: 内的单片半导体结构,被动波导耦合尾盘反弹偏移生成波导用于产生光波的反射镜。 因此,该无源波导可以耦合检测区域,用于测量激光腔和可调吸收区内的光强度用于调谐由所述生成波导产生的光波的波长。 电激光腔内的功能单元被动互连允许该基本单位迟到反弹偏移。 横向偏移和无源光学互连增加了电交叉的区域。