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    ELECTRON BEAM PUMPED VERTICAL CAVITY SURFACE EMITTING LASER
    5.
    发明申请
    ELECTRON BEAM PUMPED VERTICAL CAVITY SURFACE EMITTING LASER 审中-公开
    电子束泵浦垂直孔表面发射激光

    公开(公告)号：US20160049771A1

    公开(公告)日：2016-02-18

    申请号：US14828207

    申请日：2015-08-17

    申请人： Palo Alto Research Center Incorporated

    发明人： Thomas Wunderer ,  Noble M. Johnson ,  John E. Northrup

    IPC分类号： H01S5/343 ,  H01S5/183 ,  H01S5/30 ,  H01S5/04 ,  H01S5/327 ,  H01S5/32

    CPC分类号： H01S5/343 ,  B82Y20/00 ,  H01S3/109 ,  H01S5/0222 ,  H01S5/02461 ,  H01S5/04 ,  H01S5/14 ,  H01S5/183 ,  H01S5/18358 ,  H01S5/18369 ,  H01S5/1838 ,  H01S5/18383 ,  H01S5/305 ,  H01S5/3086 ,  H01S5/3222 ,  H01S5/327 ,  H01S5/34333

    摘要： A vertical external cavity surface emitting laser (VECSEL) structure includes a heterostructure and first and second reflectors. The heterostructure comprises an active region having one or more quantum well structures configured to emit radiation at a wavelength, λlase, in response to pumping by an electron beam. One or more layers of the heterostructure may be doped. The active region is disposed between the first reflector and the second reflector and is spaced apart from the first reflector by an external cavity. An electron beam source is configured to generate the electron beam directed toward the active region. At least one electrical contact is electrically coupled to the heterostructure and is configured to provide a current path between the heterostructure and ground.

    摘要翻译： 垂直外腔表面发射激光器（VECSEL）结构包括异质结构和第一和第二反射器。 异质结构包括具有一个或多个量子阱结构的有源区域，其被配置为响应于电子束的泵浦而以波长λlase发射辐射。 可以掺杂一个或多个异质结构层。 有源区域设置在第一反射器和第二反射器之间，并且通过外部空腔与第一反射器间隔开。 电子束源被配置为产生朝向有源区域的电子束。 至少一个电触点电耦合到异质结构并且被配置为提供异质结构和地之间的电流路径。

    SPATIAL MODULATION OF LIGHT TO DETERMINE DIMENSIONAL CHARACTERISTICS OF OBJECTS IN A FLOW PATH
    6.
    发明申请
    SPATIAL MODULATION OF LIGHT TO DETERMINE DIMENSIONAL CHARACTERISTICS OF OBJECTS IN A FLOW PATH 有权
    用于确定流路中物体的尺寸特征的光的空间调制

    公开(公告)号：US20150233704A1

    公开(公告)日：2015-08-20

    申请号：US14181524

    申请日：2014-02-14

    申请人： Palo Alto Research Center Incorporated

    发明人： Joerg Martini ,  Marshall W. Bern ,  Noble M. Johnson ,  Peter Kiesel ,  Doron Kletter ,  Bowen Cheng ,  Michael I. Recht

    IPC分类号： G01B11/04 ,  G01B11/06

    CPC分类号： G01B11/046 ,  G01B11/0691

    摘要： A device includes a spatial filter arranged in a Cartesian coordinate system having orthogonal x, y, and z axes. The spatial filter has mask features that are more light transmissive and mask features that are less light transmissive. The mask features are arranged along the x-axis in the flow direction of a flow path. A detector is positioned to detect light emanating from at least one object in the flow path, the object having a width along the y-axis, a thickness along the z-axis, and a length along the x-axis. Light emanating from the object is time modulated according to the mask features as the object moves along the flow path. The detector is configured to generate a time-varying electrical signal in response to the detected light that includes information about the width or thickness of the object.

    摘要翻译： 装置包括布置在具有正交x，y和z轴的笛卡尔坐标系中的空间滤波器。 空间滤波器具有更透光的掩模特征和较少透光的掩模特征。 掩模特征沿着流动路径的流动方向沿x轴布置。 定位检测器以检测从流动路径中的至少一个物体发出的光，该物体具有沿着y轴的宽度，沿z轴的厚度和沿着x轴的长度。 当物体沿着流动路径移动时，根据掩模特征对从物体发出的光进行时间调制。 检测器被配置为响应于检测到的光产生包括关于物体的宽度或厚度的信息的时变电信号。

    FLOW CYTOMETER
    7.
    发明申请
    FLOW CYTOMETER 有权
    流量计

    公开(公告)号：US20150177119A1

    公开(公告)日：2015-06-25

    申请号：US14139246

    申请日：2013-12-23

    申请人： Palo Alto Research Center Incorporated

    发明人： Joerg Martini ,  Noble M. Johnson ,  Michael I. Recht ,  David M. Johnson ,  Tim Curley ,  Peter Kiesel ,  Martin Sheridan

    IPC分类号： G01N15/14 ,  G01N21/62

    CPC分类号： G01N15/1459 ,  G01N15/1436 ,  G01N2015/1447

    摘要： Embodiments are directed to a host structure that includes a waveguide configured to deliver measurement light to a compartment at least partially within the host structure. The compartment is configured to reversibly engage a fluidic optical cartridge. The host structure also includes a detector configured to receive and process output light emanating from the fluidic optical cartridge as well as electronics to process signals from the detector.

    摘要翻译： 实施例涉及一种主机结构，其包括被配置为将测量光至少部分地在主机结构内传送到隔间的波导。 隔室被配置成可逆地接合流体光学盒。 主机结构还包括检测器，其被配置为接收和处理从流体光学存储器发出的输出光以及处理来自检测器的信号的电子装置。

    Method and System Implementing Spatially Modulated Excitation or Emission for Particle Characterization with Enhanced Sensitivity
    8.
    发明申请
    Method and System Implementing Spatially Modulated Excitation or Emission for Particle Characterization with Enhanced Sensitivity 审中-公开
    方法和系统实现空间调制的激发或发射用于增强灵敏度的粒子表征

    公开(公告)号：US20140370612A1

    公开(公告)日：2014-12-18

    申请号：US14474742

    申请日：2014-09-02

    申请人： Palo Alto Research Center Incorporated

    发明人： Michael Bassler ,  Peter Kiesel ,  Oliver Schmidt ,  Noble M. Johnson

    IPC分类号： G01N21/64

    CPC分类号： G01N21/6486 ,  G01N15/1427 ,  G01N15/147 ,  G01N2015/1447 ,  G01N2015/1454 ,  Y10T436/143333 ,  Y10T436/17

    摘要： A method and system for using spatially modulated excitation/emission and relative movement between a particle (cell, molecule, aerosol, . . . ) and an excitation/emission pattern are provided. In at least one form, an interference pattern of the excitation light with submicron periodicity perpendicular to the particle flow is used. As the particle moves along the pattern, emission is modulated according to the speed of the particle and the periodicity of the stripe pattern. A single detector, which records the emission over a couple of stripes, can be used. The signal is recorded with a fast detector read-out in order to capture the “blinking” of the particles while they are moving through the excitation pattern. This concept enables light detection with high signal-to-noise ratio and high spatial resolution without the need of expensive and bulky optics.

    摘要翻译： 提供了使用空间调制的激发/发射和颗粒（细胞，分子，气溶胶等）和激发/发射图案之间的相对运动的方法和系统。 在至少一种形式中，使用具有垂直于颗粒流的亚微米周期的激发光的干涉图案。 当颗粒沿着图案移动时，根据颗粒的速度和条纹图案的周期性来调制发射。 可以使用记录两条条纹上的发射的单个检测器。 用快速检测器读出来记录信号，以便在它们移动通过激励图案时捕获颗粒的“闪烁”。 这个概念能够实现高信噪比和高空间分辨率的光检测，而不需要昂贵和庞大的光学元件。

    Polarization controlled transistor
    9.
    发明授权
    Polarization controlled transistor 有权

    公开(公告)号：US11848371B2

    公开(公告)日：2023-12-19

    申请号：US16920249

    申请日：2020-07-02

    申请人： Palo Alto Research Center Incorporated

    发明人： Thomas Wunderer ,  Jengping Lu ,  Noble M. Johnson

    IPC分类号： H01L29/778 ,  H01L29/66 ,  H01L29/20

    CPC分类号： H01L29/66462 ,  H01L29/2003 ,  H01L29/7786 ,  H01L29/7787 ,  H01L29/7788

    摘要： A transistor includes a first layer comprising a group III-nitride semiconductor. A second layer comprising a group III-nitride semiconductor is disposed over the first layer. A third layer comprising a group III-nitride semiconductor is disposed over the second layer. An interface between the second layer and the third layer form a polarization heterojunction. A fourth layer comprising a group III-nitride semiconductor is disposed over the third layer. An interface between the third layer and the fourth layer forms a pn junction. A first electrical contact pad is disposed on the fourth layer. A second electrical contact pad is disposed on the third layer. A third electrical contact pad is electronically coupled to bias the polarization heterojunction.