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    Optical system and method for metallurgical extraction and refining
    2.
    发明授权
    Optical system and method for metallurgical extraction and refining 有权

    公开(公告)号：US11981977B2

    公开(公告)日：2024-05-14

    申请号：US17248038

    申请日：2021-01-06

    申请人： INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE

    发明人： Stéphane Payeur ,  François Légaré ,  Jean-Claude Kieffer

    IPC分类号： C22B4/08 ,  B23K26/0622 ,  B23K26/40 ,  G02B27/09

    CPC分类号： C22B4/08 ,  B23K26/0624 ,  B23K26/40 ,  G02B27/0927

    摘要： A method and a system, the system, comprising a laser source, a ionization and acceleration unit, a separation unit, and a collecting unit, wherein the laser source comprises a large bandwidth laser delivering successive pulses of fixed central wavelength and bandwidth to a surface of a target positioned inside the ionization and acceleration unit, surface atoms of the target being ionized by the pulses, accelerated from the surface of the target to a kinetic energy in the range between 100 eV and 10 KeV, and focused to the separation unit, the separation unit separating received atoms into different ions species, and the collecting unit separately collecting the different ion species. The method comprises positioning a target inside a resistive tube, delivering successive pulses of same selected wavelength and bandwidth from a large bandwidth laser generating a beam of fixed central wavelength and bandwidth to a surface of the target to ionize atoms of the surface of the target, accelerate the ionized atoms to a kinetic energy in a range between 100 eV and 10 KeV, under an electric field in a resistive tube, directing the ionized atoms to a magnetic separator, and collecting ions species of the target separately in cup collectors.

    Method and system for generating intense, ultrashort pulses of XUV and soft x-ray radiation via HHG
    4.
    发明授权
    Method and system for generating intense, ultrashort pulses of XUV and soft x-ray radiation via HHG 有权

    公开(公告)号：US11573478B2

    公开(公告)日：2023-02-07

    申请号：US17110964

    申请日：2020-12-03

    申请人： INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE

    发明人： Mangaljit Singh ,  Tsuneyuki Ozaki

    IPC分类号： G02F1/35 ,  G02F1/37 ,  G02F1/355 ,  H01S3/16 ,  H05G2/00 ,  H01S3/00

    摘要： A method and a system for generating intense, ultrashort pulses of XUV and soft X-ray radiation via high-order harmonic generation (HHG), the method comprising selecting a nonlinear solid target and a laser source; separating a beam from the laser source into a first laser beam and a second laser beam; focusing the first laser beam onto the nonlinear solid target, thereby generating a laser ablated plume; and compressing and frequency-doubling the second laser beam and directing a resulting second compressed and frequency-doubled laser beam to the laser ablated plume, thereby yielding high-order harmonic generation of radiation of photon energies in a range between 12 eV and 36 eV. A high-order harmonic source of radiation, comprising a nonlinear solid target; a laser source; a beam splitter separating a beam from the laser source into a first beam line and a second beam line; the first beam line comprising a first focusing unit directing a first, uncompressed, laser beam onto the nonlinear solid target, to generate a laser ablated plume; and the second beam line directing a second, compressed and frequency-doubled laser beam, to the laser ablated plume, yielding high-order harmonic generation of radiation of photon energies in a range between 12 eV and 36 eV.

    Method and system of laser-driven intense x-ray photons imaging
    7.
    发明授权
    Method and system of laser-driven intense x-ray photons imaging 有权

    公开(公告)号：US11438997B2

    公开(公告)日：2022-09-06

    申请号：US17250302

    申请日：2019-07-04

    申请人： INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITY OF SASKATCHEWAN

    发明人： Sylvain Fourmaux ,  Jean-Claude Kieffer ,  Emil Hallin

    IPC分类号： H05G2/00 ,  G01N33/00 ,  G01N23/041

    摘要： A X-ray source, comprising a laser, of a pulse duration of at most 40 fs, instantaneous power of at least about 80 TW, a pulse repetition rate of at least 1 Hz; an optical compressor spectrally shaping the laser beam; focusing optics in the range between f#10 and f#15; and a gas target of electron density after ionization by the laser beam in a range between 1018 cm3 and 1019 cm−3; wherein the focusing optics focuses the laser beam in the gas target, and interaction of the focused laser beam with the gas target generates an X-ray beam, with a focused laser amplitude a0, given by a0=0.855 [IL (1018W/cm2)λL,2 (μm)]1/2, where IL is the on-target laser intensity and λL is the laser wavelength, of at least 2 and a P/Pc ratio value of at least 20, with P being the beam power and Pc a critical power given by Pc=17 (nc/n) GW where n is the electron density and nc is a critical electron density at which the plasma acts as a mirror reflecting the laser beam.

    SYSTEM AND METHOD FOR TERAHERTZ POLARIZATION-DIVISION MULTIPLEXING
    10.
    发明申请
    SYSTEM AND METHOD FOR TERAHERTZ POLARIZATION-DIVISION MULTIPLEXING 有权

    公开(公告)号：US20220021473A1

    公开(公告)日：2022-01-20

    申请号：US17305925

    申请日：2021-07-16

    申请人： INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE

    发明人： Junliang DONG ,  Alessandro TOMASINO ,  Giacomo BALISTRERI ,  Aycan YURTSEVER ,  José AZAÑA ,  Yoann JESTIN ,  Roberto MORANDOTTI

    IPC分类号： H04J14/06 ,  G02B6/293 ,  H01P3/10

    摘要： A THz waveguide is described, comprising four conductive wires separated by an air gap, the THz waveguide allowing low-loss and dispersion-free propagation of a THz signal. The system for terahertz polarization-division multiplexing comprises at least two THz sources, a THz waveguide and a THz receiver, wherein said THz waveguide comprises four conductive wires separated by an air gap; THz pulses from the THz sources being coupled into the THz waveguide; the THz waveguide transmitting the THz pulses independently, the THz waveguide operating as a broadband polarization-division multiplexer. The method for terahertz polarization-division multiplexing, comprising multiplexing THz pulses from terahertz sources in free-space, coupling resulting multiplexed THz pulses into a THz waveguide comprising four conductive wires separated by an air gap; and demultiplexing the multiplexed THz pulses after propagation in the waveguide.