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48 条记录 (耗时 0.024 秒)

    Increased lateral oxidation rate of aluminum indium arsenide
    2.
    发明授权
    Increased lateral oxidation rate of aluminum indium arsenide 失效
    增加砷化铟铝的侧向氧化率

    公开(公告)号：US06472695B1

    公开(公告)日：2002-10-29

    申请号：US09594838

    申请日：2000-06-15

    申请人： Eric M. Hall ,  Larry A. Coldren

    发明人： Eric M. Hall ,  Larry A. Coldren

    IPC分类号： H01L310304

    CPC分类号： H01L21/02178 ,  H01L21/022 ,  H01L21/02241 ,  H01L21/02255 ,  H01L21/31666 ,  H01S5/18311 ,  H01S5/18372 ,  H01S5/3201 ,  H01S5/3235

    摘要： The present invention discloses a device and a method for producing an oxidizable digital alloy that is sufficiently strain-compensated to provide for substantially defect-free growth on indium phosphide. The device comprises a layer of semiconductor material, a first layer, and a second layer. The first layer is indium arsenide and is coupled to the layer of semiconductor material, wherein the first layer of indium arsenide is under a compressive strain by a lattice mismatch between the layer of semiconductor material and the first layer of indium arsenide. The second layer is aluminum arsenide and is coupled to the layer of indium arsenide, wherein the second layer of aluminum arsenide is under a tensile strain by a lattice mismatch between the second layer and the first layer. The first layer and the second layer comprise a digital alloy of aluminum indium arsenide, and create a quasi-strain-compensated substantially defect-free alloy on the layer of semiconductor material therein. A superlattice period of the first layer of indium arsenide and a second layer of aluminum arsenide is selected to allow an oxide of desired depth to be produced from the digital alloy.

    摘要翻译： 本发明公开了一种用于制造可氧化数字合金的装置和方法，其被充分应变补偿以在磷化铟上提供基本上无缺陷的生长。 该器件包括半导体材料层，第一层和第二层。 第一层是砷化铟并且耦合到半导体材料层，其中第一层砷化铟由于半导体材料层和第一层砷化铟之间的晶格失配而处于压缩应变之下。 第二层是砷化铝，并且与砷化铟层耦合，其中第二层砷化铝在第二层与第一层之间的晶格失配下处于拉伸应变之下。 第一层和第二层包括砷化铝铟的数字合金，并在其中的半导体材料层上产生准应变补偿的基本上无缺陷的合金。 选择第一层砷化铟的超晶格周期和第二层砷化铝，以允许从数字合金产生所需深度的氧化物。

    Heat spreading layers for vertical cavity surface emitting lasers
    5.
    发明授权
    Heat spreading layers for vertical cavity surface emitting lasers 失效
    用于垂直腔表面发射激光器的散热层

    公开(公告)号：US06810064B1

    公开(公告)日：2004-10-26

    申请号：US09934791

    申请日：2001-08-21

    申请人： Larry A. Coldren ,  Eric M. Hall ,  Shigeru Nakagawa

    发明人： Larry A. Coldren ,  Eric M. Hall ,  Shigeru Nakagawa

    IPC分类号： H01S308

    CPC分类号： B82Y20/00 ,  H01S5/02461 ,  H01S5/18316 ,  H01S5/18341 ,  H01S5/3095 ,  H01S5/34306

    摘要： A system and a method for reducing the temperature in a vertical-cavity surface-emitting laser (VCSEL) comprising of including at least one heat spreading layer adjecent to one of the reflecting surfaces in a VCSEL. The heat spreading layer has high thermal conductivity allowing heat to bypass said one of the reflecting surfaces, thereby efficiently removing the heat away from the device. This also reduces the serial resistance and the thermal impedance of the VCSEL.

    摘要翻译： 一种用于降低垂直腔表面发射激光器（VCSEL）中的温度的系统和方法，包括在VCSEL中包括与所述反射表面中的一个相邻的至少一个热扩散层。 散热层具有高热导率，允许热量绕过所述一个反射表面，从而有效地将热量从器件上除去。 这也降低了VCSEL的串联电阻和热阻抗。

    Small dimension high-efficiency high-speed vertical-cavity surface-emitting lasers
    8.
    发明授权
    Small dimension high-efficiency high-speed vertical-cavity surface-emitting lasers 有权
    小尺寸高效率高速垂直腔表面发射激光器

    公开(公告)号：US07916768B2

    公开(公告)日：2011-03-29

    申请号：US12410388

    申请日：2009-03-24

    申请人： Yu-Chia Chang ,  Larry A. Coldren

    发明人： Yu-Chia Chang ,  Larry A. Coldren

    IPC分类号： H01S5/00

    CPC分类号： H01S5/18333 ,  H01S5/028 ,  H01S5/06226 ,  H01S5/18305 ,  H01S5/18311 ,  H01S2301/166

    摘要： A Vertical-Cavity Surface-Emitting Laser (VCSEL) is disclosed, comprising an optical cavity bounded by a top mirror and a bottom mirror, wherein the top mirror has multiple layers of alternating refractive index, of which the bottom three or more layers of the top mirror are deep oxidation layers having an increased oxidation length, a light emitting active region between the top mirror and the bottom mirror, and an aperture with tapered edges between the active region and the top mirror, wherein the aperture has a thickness, a taper length, an oxide aperture length, a taper angle, and an aperture opening diameter designed to reduce an optical mode's diameter without significantly increasing the optical mode's round trip scattering loss.

    摘要翻译： 公开了一种垂直腔表面发射激光器（VCSEL），其包括由顶部反射镜和底部反射镜限定的光学腔，其中顶部反射镜具有多层交替折射率，其中底层三层或更多层 上反射镜是具有增加的氧化长度的深氧化层，在上反射镜和底镜之间的发光有源区，以及在有源区和顶反射镜之间具有锥形边缘的孔，其中孔具有厚度，锥度 长度，氧化物孔径长度，锥角和孔径直径，其设计用于在不显着增加光学模式的往返散射损耗的情况下降低光学模式的直径。

    Direct-coupled multimode WDM optical data links with monolithically-integrated multiple-channel VCSEL and photodetector
    9.
    发明授权
    Direct-coupled multimode WDM optical data links with monolithically-integrated multiple-channel VCSEL and photodetector 有权
    直接耦合多模WDM光数据链路，采用单片集成多通道VCSEL和光电探测器

    公开(公告)号：US06195485B1

    公开(公告)日：2001-02-27

    申请号：US09425542

    申请日：1999-10-22

    申请人： Larry A. Coldren ,  Syn-Yem Hu

    发明人： Larry A. Coldren ,  Syn-Yem Hu

    IPC分类号： G02B630

    CPC分类号： G02B6/4202 ,  G02B6/4239 ,  G02B6/4246 ,  G02B6/4249 ,  H01S5/02284 ,  H01S5/18358 ,  H01S5/4087 ,  H01S5/423

    摘要： A low cost, high speed WDM optical link which employs a circular array of VCSEL emitters directly coupled to a multi-mode fiber through which multiple simultaneously optical transmissions are sent to an optical detector comprising a circular array of RCPD detectors receiving the multiple simultaneous transmissions. The emitters and detectors within each array are fabricated with a double-absorber design which avoids position sensitivity related to the cavity standing wave and eliminates the need for in-situ cavity-mode adjustment. In addition, a coupled-cavity structure is presented to achieve passbands with flat tops and steep sides to approach the ideal square-shape photoresponse and to ensure proper channel alignment.

    摘要翻译： 一种低成本，高速WDM光链路，其采用直接耦合到多模光纤的VCSEL发射器的圆形阵列，多模光纤通过多模光纤将多个同时光传输发送到包括接收多个同时传输的RCPD检测器的圆阵列的光检测器。 每个阵列中的发射器和检测器都采用双吸收器设计制造，避免了与腔体驻波相关的位置灵敏度，并消除了对原位腔模调整的需要。 此外，提供耦合腔结构以实现具有平坦顶部和陡峭侧面的通带以接近理想的正方形光响应并且确保正确的通道对准。

    Multi-section tunable laser with differing multi-element mirrors
    10.
    发明授权
    Multi-section tunable laser with differing multi-element mirrors 失效
    多段可调激光器，具有不同的多元镜

    公开(公告)号：US4896325A

    公开(公告)日：1990-01-23

    申请号：US235307

    申请日：1988-08-23

    申请人： Larry A. Coldren

    发明人： Larry A. Coldren

    IPC分类号： H01S5/0625 ,  H01S5/12 ,  H01S5/125

    CPC分类号： H01S5/06256 ,  H01S5/125 ,  H01S5/1215

    摘要： An improvement for allowing selective tuning of the emitted beam over a broad bandwidth to a diode laser having an active section for creating a light beam by spontaneous emission over a bandwidth around some center frequency and for guiding and reflecting the light beam between a pair of mirrors bounding the active on respective ends thereof to create an emitted beam of laser light. The mirrors each have narrow, spaced reflective maxima with the spacing of the reflective maxima of respective ones of the mirrors being different whereby only one the reflective maxima of each of the mirrors can be in correspondence and thereby provide a low loss window at any time. The preferred mirrors each include a plurality of discontinuities to cause the narrow, spaced reflective maxima wherein the spacing of the discontinuities of one mirror is different from the spacing of the discontinuities of the other mirror so as to cause the wavelength spacing of the maxima to be different. Additionally, the preferred embodiment includes a vernier circuit operably connected to the mirrors for providing an electrical signal to the mirrors which will cause continuous tuning within a desired frequency band, an offset control circuit operably connected to the mirrors for providing a voltage signal to the mirrors which will shift the reflective maxima of the mirrors into alignment at a desired frequency mode, and a phase control circuit for adjusting the laser mode wavelength to be in correspondence with the low loss window.

    摘要翻译： 一种改进，用于允许在宽带宽上选择性地调谐发射的光束到具有有源部分的二极管激光器，该有源部分用于通过在一些中心频率周围的带宽上的自发发射产生光束，以及用于在一对反射镜之间引导和反射光束 在其端部上限制活性物质以产生发射的激光束。 这些反射镜各自具有窄的间隔的反射最大值，其中相应的反射镜的反射最大值的间隔是不同的，因此每个反射镜的反射最大值只有一个可以对应，从而在任何时间提供低损耗窗口。 优选的反射镜各自包括多个不连续性，以产生窄的间隔开的反射最大值，其中一个反射镜的不连续部分的间距不同于另一个反射镜的不连续部分的间距，以使最大值的波长间隔为 不同。 另外，优选实施例包括可操作地连接到反射镜的游标电路，用于向反射镜提供电信号，该电信号将在期望的频带内引起连续调谐;偏置控制电路，可操作地连接到反射镜，以向反射镜提供电压信号 这将使反射镜的反射最大值以期望的频率模式进行对准;以及相位控制电路，用于将激光模式波长调整为与低损耗窗口相对应。