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公开(公告)号：US11604139B2
公开(公告)日：2023-03-14
申请号：US17060479
申请日：2020-10-01
IPC分类号： G01N21/3581 , G01N21/21 , H04N5/30
摘要： Real-time multidimensional terahertz imaging system and method, the method comprising method for imaging an object, comprising, in a laser pump line: patterning a laser pump beam with known patterns of a radiation beam and illuminating the object with the radiation beam; yielding a patterned pump beam; directing the patterned beam from the pump line and a laser probe beam from a laser probe line to a detection crystal; single-shot detection of the radiation beam waveform; and correlating the single-shot detection and the known patterns.
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公开(公告)号：US11588573B2
公开(公告)日：2023-02-21
申请号：US17305925
申请日：2021-07-16
发明人： Junliang Dong , Alessandro Tomasino , Giacomo Balistreri , Aycan Yurtsever , José Azaña , Yoann Jestin , Roberto Morandotti
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.
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公开(公告)号：US10175556B2
公开(公告)日：2019-01-08
申请号：US15560614
申请日：2016-04-12
发明人： Christian Reimer , Michael Kues , Benjamin Wetzel , Piotr Roztocki , Yoann Jestin , Fabio Grazioso , Roberto Morandotti
摘要： A method and a system method for generating optical multipartite quantum states, comprising generating optical fields by at least two different spontaneous four-wave mixing processes and overlapping the optical fields spontaneously generated from the different spontaneous four-wave mixing processes into a same resonator mode of a third-order nonlinear resonator. The system comprises a multi-colored laser source exiting a nonlinear third-order resonator at different resonance frequencies belonging to different mode families of the resonator.
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公开(公告)号：US20210025816A1
公开(公告)日：2021-01-28
申请号：US16938152
申请日：2020-07-24
发明人： Holger Breitenborn , Junliang Dong , Riccardo Piccoli , Roberto Morandotti , Luca Razzari , Rafik Naccache , Fiorenzo Vetrone
IPC分类号： G01N21/3581 , G01J5/00
摘要： A method and a system for determining material-, size-, and morphology-dependent photothermal properties of particles dispersed in solutions, the method comprising using coherently detected pulsed THz radiation, tracking a temperature-dependent refractive index change of the particles dispersion in time and space, and correlating the temperature-dependent refractive index change of the particles dispersion in time and space to temperature values. A system comprises a source of electromagnetic radiation; a THz emitter; a THz detector; and a vessel containing a dispersion of particles, wherein the source of electromagnetic radiation is configured to emit electromagnetic radiation to excite the particles in the dispersion; the THz emitter is configured to send THz radiation to the vessel and the THz detector is configured to receives THz radiation returned by from the vessel.
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15.发明授权Spectral-domain interferometric method and system for characterizing terahertz radiation 有权用于表征太赫兹辐射的光谱域干涉法和系统公开(公告)号：US09335213B2
公开(公告)日：2016-05-10
申请号：US14417968
申请日：2013-08-01
摘要： A method and system based on spectral domain interferometry for detecting intense THz electric field, allowing the use of thick crystal for spectroscopic purposes, in order to makes long temporal scans for increased spectral resolutions, and overcoming the limitation of over-rotation for presently available high power THz sources. Using this method and system the phase difference of approximately 8898π can be measured, which is 18000 times higher than the phase difference measured by electro-optic sampling (π/2).
摘要翻译： 一种基于频域干涉测量的方法和系统，用于检测强烈的THz电场，允许使用厚晶体进行光谱目的，以便对增加的光谱分辨率进行长时间扫描，并克服当前可用高度的过度旋转的限制 功率太赫兹源。 使用这种方法和系统，相位差约为8898＆pgr; 可以测量，比通过电光采样（＆pgr / 2）测量的相位差高18000倍。
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16.发明授权公开(公告)号：US11360023B2
公开(公告)日：2022-06-14
申请号：US17086814
申请日：2020-11-02
IPC分类号： G01N21/3581 , G01J11/00 , G01J3/10 , G01J3/42
摘要： A device, a system and a method for homodyne solid-state biased coherent detection of terahertz pulses in a range between 0.1 and 11 THz, the device comprising a metallic slit between, and parallel to, two longitudinal metallic electrodes, deposited on a surface of a substrate, and covered with a layer of nonlinear material, wherein a width of the metallic slit and a thickness of the nonlinear material layer are selected in relation to a central wavelength of the THz pulses. The method comprises focusing a THz beam and a pulsed laser beam of pulse energies in a range between 10 and 100 nJ onto the metallic slit, the metallic electrodes being biased by a static DC voltage bias selected in a range between 20 VPP and 200 VPP; and retrieving a terahertz pulse waveform using the terahertz pulse repetition rate as synchronism.
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公开(公告)号：US10578421B2
公开(公告)日：2020-03-03
申请号：US15735430
申请日：2016-09-08
发明人： Piotr Roztocki , Christian Reimer , Michael Kues , Robin Helsten , Yoann Jestin , Roberto Morandotti
摘要： A system and method for phase-readout/control and active stabilization on arbitrary interferometric phase in the optical interferometer platform is disclosed. The method makes use of a bi-colored polarization-multiplexed reference laser scheme. The disclosed scheme is based on two phase-locked reference signals with different frequencies that together remove the phase ambiguity. The two signals are polarization-multiplexed (either in free-space or optical fiber implementations) to enable easy separation and combining of these two signals through the use of polarization beam-splitters. The disclosed scheme provides a one-to-one map between phase and feedback signal levels, and enables phase-readout and stabilization even when one of the feedback-signals is at a maximum/minimum.
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