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    Method for correcting a signal backscattered by a sample and associated device
    215.
    发明授权
    Method for correcting a signal backscattered by a sample and associated device 有权
    用于校正由样品和相关装置反向散射的信号的方法

    公开(公告)号：US09594024B2

    公开(公告)日：2017-03-14

    申请号：US15015325

    申请日：2016-02-04

    Applicant: Commissariat a L'Energie Atomique et aux Energies Alternatives

    Inventor： Blandine Roig ,  Anne Koenig ,  Jean-Marc Dinten ,  Francois Perraut

    IPC: G01J3/44 ,  G01N21/65 ,  G01N21/64 ,  G01N21/49 ,  G01N21/27 ,  G02B21/00

    CPC classification number: G01N21/65 ,  G01J3/0229 ,  G01J3/027 ,  G01J3/44 ,  G01N21/274 ,  G01N21/49 ,  G01N21/6458 ,  G01N21/6486 ,  G01N2201/06113 ,  G01N2201/0833 ,  G01N2201/121 ,  G02B21/0076

    Abstract: The invention relates to a method for correcting an optical signal produced by a sample comprising the following steps: illuminating a surface of the sample by a first light beam, produced by a first light source, the said first light source being coupled to a first optical system, focusing the said first light beam in an object focal plane of the first optical system, the said object focal plane being situated, in the sample, at a measuring depth z from the surface of the sample; measuring, with a first photodetector, of a first optical signal backscattered by the sample in response to the first light beam, the first photodetector producing a first measured signal representative of the said first optical signal, a spatial filter being interposed between the first optical system and the first photodetector, the spatial filter comprising a window which transmits the said first optical signal towards the said first photodetector, the window being disposed in a conjugate focal plane of the object focal plane of the first optical system; wherein the method also comprises the following steps: determining an optical scattering property of the sample; applying a correction function to the first measured signal so as to generate a first corrected signal, the said correction function taking into account the said optical scattering property.

    Abstract translation: 本发明涉及一种用于校正由样品产生的光学信号的方法，包括以下步骤：通过由第一光源产生的第一光束照射样品的表面，所述第一光源耦合到第一光学 系统，将所述第一光束聚焦在第一光学系统的物体焦平面中，所述物体焦平面位于样品中，距离样品表面的测量深度z; 利用第一光电检测器响应于第一光束由样品反向散射的第一光信号，第一光电检测器产生表示所述第一光信号的第一测量信号，空间滤光器插入在第一光学系统 并且所述第一光电检测器包括将所述第一光信号朝向所述第一光电检测器传输的窗口，所述窗口设置在所述第一光学系统的物体焦平面的共轭焦平面中; 其中所述方法还包括以下步骤：确定所述样品的光学散射性质; 对第一测量信号应用校正函数，以产生第一校正信号，所述校正函数考虑所述光散射特性。

    Acquiring a Raman spectrum with multiple lasers
    216.
    发明授权
    Acquiring a Raman spectrum with multiple lasers 有权
    用多个激光获取拉曼光谱

    公开(公告)号：US09581493B2

    公开(公告)日：2017-02-28

    申请号：US14179200

    申请日：2014-02-12

    Applicant: Bruker Optics, Inc.

    Inventor： John B. Cooper ,  Mohamed F. Abdelkader ,  Kent L. Wise

    IPC: G01J3/44 ,  G01J3/10 ,  G01N21/65 ,  G01J3/02

    CPC classification number: G01J3/10 ,  G01J3/027 ,  G01J3/44 ,  G01N21/65

    Abstract: A spectrometer is provided for acquiring a Raman spectrum from a sample. The spectrometer includes a first laser, a second laser, a detector and a processing device. The first laser is adapted to produce a first laser beam for generating first Raman spectra from the sample. The second laser is adapted to produce a second laser beam for generating second Raman spectra from the sample. The detector is adapted to collect the first Raman spectra and the second Raman spectra. The processing device is adapted to process the collected first and second Raman spectra to provide the Raman spectrum.

    Abstract translation: 提供了一种用于从样品中获取拉曼光谱的光谱仪。 光谱仪包括第一激光器，第二激光器，检测器和处理装置。 第一激光器适于产生用于从样品产生第一拉曼光谱的第一激光束。 第二激光器适于产生用于从样品产生第二拉曼光谱的第二激光束。 检测器适于收集第一拉曼光谱和第二拉曼光谱。 处理装置适于处理所收集的第一和第二拉曼光谱以提供拉曼光谱。

    Systems and methods for controlling the optical path length between a laser and an optical cavity
    217.
    发明授权
    Systems and methods for controlling the optical path length between a laser and an optical cavity 有权
    用于控制激光器和光腔之间的光程长度的系统和方法

    公开(公告)号：US09581492B2

    公开(公告)日：2017-02-28

    申请号：US14823767

    申请日：2015-08-11

    Applicant: LI-COR, Inc.

    Inventor： Serguei Koulikov

    IPC: G01J3/02 ,  G01J3/42 ,  G01J3/45 ,  G01N21/41 ,  G01N21/39

    CPC classification number: G01J3/027 ,  G01J3/42 ,  G01J3/45 ,  G01N21/41 ,  G01N2021/391 ,  G01N2021/399

    Abstract: Systems and methods for controlling the optical path length between a feedback enabled laser and a cavity, and hence the optical feedback phase. A phasor element, positioned along an optical path between the laser and the cavity coupling mirror, includes a gas medium within a volume defined by the phasor element. The phasor element is configured to adjust or control an optical path length of the laser light between the laser and the cavity coupling mirror by adjusting or controlling a density of the gas medium within the phasor volume.

    Abstract translation: 用于控制反馈使能的激光器和空腔之间的光程长度的系统和方法，并因此控制光学反馈阶段。 沿着激光器和腔耦合镜之间的光路定位的相量元件包括由相量元件限定的体积内的气体介质。 相量元件被配置为通过调节或控制相量体积内的气体介质的密度来调节或控制激光和腔耦合反射镜之间的激光的光路长度。

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