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    SUPERCONDUCTING SINGLE PHOTON DETECTION SYSTEM
    1.
    发明公开
    SUPERCONDUCTING SINGLE PHOTON DETECTION SYSTEM 审中-实审

    公开(公告)号：EP4379332A1

    公开(公告)日：2024-06-05

    申请号：EP22849584.2

    申请日：2022-07-28

    Applicant: National Institute of Information and Communications Technology

    Inventor： MIKI, Shigehito ,  TERAI, Hirotaka

    IPC: G01J11/00 ,  G01J1/02 ,  G01J1/42 ,  G01J1/44 ,  H10N60/00 ,  H10N60/10 ,  H04B10/70

    CPC classification number: G01J1/02 ,  G01J1/44 ,  G01J11/00 ,  H04B10/70 ,  G01J1/42

    Abstract: A superconducting single-photon detection system includes: a plurality of optical transmission paths through each of which a photon emitted from a light source is transmitted; a plurality of superconducting single-photon detectors (hereinafter referred to as "SSPDs") that are independent of each other and in one-to-one correspondence with the optical transmission paths; and a superconducting logic circuit that multiplexes first pulse signals output from the SSPDs. A photon entry time at which the photon enters each of the SSPDs through a corresponding one of the optical transmission paths is different for each of the optical transmission paths, and a difference in the photon entry time between the optical transmission paths is greater than a pulse width of a corresponding one of second pulse signals output from the superconducting logic circuit.

    MEASUREMENT DEVICE
    4.
    发明公开
    MEASUREMENT DEVICE 审中-公开
    测量装置

    公开(公告)号：EP3293837A1

    公开(公告)日：2018-03-14

    申请号：EP16188142.0

    申请日：2016-09-09

    Applicant: GSI Helmholtzzentrum für Schwerionenforschung GmbH ,  Technische Universität

    Inventor： Bagnoud, Vincent ,  Roth, Markus ,  Schanz, Victor ,  Wagner, Florian

    IPC: H01S3/00 ,  G02F1/39

    CPC classification number: G01J11/00 ,  G02F1/39

    Abstract: A laser pulse contrast ratio measurement device is presented, the device comprising a laser pulse generator for generating a sum frequency laser pulse, the laser pulse generator providing an interaction zone, a beam guide device having a first beam guide for guiding a reference beam to said interaction zone in said laser pulse generator and a second beam guide for guiding a probe beam to said interaction zone in said laser pulse generator. The device further comprises a detection unit for detecting the sum frequency laser pulse generated in said laser pulse generator. The probe beam has a probe beam frequency, whereas the reference beam has a reference beam frequency, wherein the reference beam frequency corresponds to the second harmonic of the probe beam frequency. The beam guide device of said device is adapted to direct the reference beam and the probe beam in a non-collinear manner under an interaction angle on said laser pulse generator so that the probe beam and the reference beam interact in the interaction zone of the laser pulse generator so as to generate the sum frequency laser pulse in the laser pulse generator, and wherein the beam guide device is adjusted to provide the interaction angle between the reference beam and the probe beam in the interaction zone in the laser pulse generator to be greater than 3°.

    Abstract translation: 提供了一种激光脉冲对比率测量装置，该装置包括用于产生和频激光脉冲的激光脉冲发生器，该激光脉冲发生器提供交互区域，具有第一光束导向装置的光束导向装置，该第一光束导向装置用于将参考光束引导至所述 在所述激光脉冲发生器中的相互作用区和用于将探测光束引导到所述激光脉冲发生器中的所述相互作用区的第二光束导向器。 该装置还包括用于检测在所述激光脉冲发生器中产生的和频激光脉冲的检测单元。 探测光束具有探测光束频率，而参考光束具有参考光束频率，其中参考光束频率对应于探测光束频率的二次谐波。 所述装置的光束引导装置适合于在所述激光脉冲发生器上以相互作用的角度以非共线方式引导参考光束和探测光束，使得探测光束和参考光束在激光器的相互作用区域中相互作用 以产生激光脉冲发生器中的和频激光脉冲，并且其中调整光束引导装置以提供参考光束与激光脉冲发生器中的相互作用区域中的探测光束之间的相互作用角度更大 比3°。

    DISPOSITIF ET PROCEDE DE CARACTERISATION D'UN FAISCEAU DE LUMIERE
    6.
    发明公开
    DISPOSITIF ET PROCEDE DE CARACTERISATION D'UN FAISCEAU DE LUMIERE 审中-公开
    DISPOSITIF ET PROCEDE DE CARACTERISATION D'UNIS FAISCEAU DE LUMIERE

    公开(公告)号：EP3155386A1

    公开(公告)日：2017-04-19

    申请号：EP15747755.5

    申请日：2015-06-15

    Applicant: Commissariat à l'Énergie Atomique et aux Énergies Alternatives

    Inventor： QUERE, Fabien ,  GALLET, Valentin ,  PARIENTE, Gustave

    IPC: G01J9/02 ,  G01J11/00

    CPC classification number: G01J11/00 ,  G01J3/453 ,  G01J9/0215 ,  G01J2003/4538

    Abstract: One aspect of the invention concerns a method for characterization of a light beam, comprising the following steps: - separation of the light beam by means of a separator optic into a first sub-beam and a second sub-beam; - propagation of the first sub-beam over a first optic and of the second sub-beam over a second optic, said first and second optics being respectively arranged so that the first sub-beam on leaving the first optic, referred to as the "reference beam", and the second sub-beam on leaving the second optic, referred to as the "characterized beam", are separated by a time delay τ; - recombination of the reference beam and the characterized beam by means of a recombiner optic, in such a way that the beams spatially interfere and form a two-dimensional interference pattern, the two-dimensional interference pattern extending along a first plane; - measurement of the spectral frequency of at least one part of the two-dimensional interference pattern by means of a measurement system, - calculation of the Fourier transform in the time domain of at least one spatial point of the frequency spectrum, said Fourier transform in the time domain having a time central peak and first and second time side peaks; - calculation of the Fourier transform in the frequency domain for one of said first and second time side peaks; - calculation of the spectral amplitude A
    R (ω) and of the space-spectrum phase φ
    R (χ,γ,ω) for said Fourier transform in the frequency domain.

    Abstract translation: 本发明的一个方面涉及一种用于表征光束的方法，包括以下步骤： - 借助分离光学装置将光束分离成第一子光束和第二子光束; - 第一子光束在第一光学器件上的传播以及第二子光束在第二光学器件上的传播，所述第一和第二光学器件分别被布置为使得离开第一光学器件的第一子光束被称为“ 参考光束“，而离开第二光学器件的第二子光束被称为”特征光束“，被时间延迟τ分开; - 借助于再化合器光学器件重新组合参考光束和特征光束，使得光束在空间上干涉并形成二维干涉图案，二维干涉图案沿着第一平面延伸; - 借助于测量系统测量二维干涉图案的至少一部分的频谱频率， - 计算频谱的至少一个空间点的时域中的傅立叶变换，所述傅立叶变换在 该时域具有时间中心峰值以及第一和第二时间副峰值; - 计算所述第一和第二时间侧峰值之一的频域中的傅里叶变换; - 计算频域中所述傅里叶变换的谱幅度AR（ω）和空间谱相位φR（χ，γ，ω）。

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