公开(公告)号：EP2870442A4

公开(公告)日：2016-07-06

申请号：EP13826108

申请日：2013-08-01

Applicant: INST NAT RECH SCIENT

Inventor： SHARMA GARGI ,  SINGH KANWARPAL ,  MORANDOTTI ROBERTO ,  OZAKI TSUNEYUKI

IPC: G01J3/45 ,  G01J3/10 ,  G01J3/453 ,  G01J11/00 ,  G01N21/3586

CPC classification number: G01J3/45 ,  G01J3/108 ,  G01J3/453 ,  G01J11/00

公开(公告)号：CA3097792A1

公开(公告)日：2021-05-05

申请号：CA3097792

申请日：2020-11-02

Applicant: INST NAT RECH SCIENT

Inventor： MORANDOTTI ROBERTO ,  RAZZARI LUCA ,  JESTIN YOANN ,  TOMASINO ALESSANDRO ,  PICCOLI RICCARDO

IPC: G01J11/00

Abstract: 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.

公开(公告)号：CA3124965A1

公开(公告)日：2022-01-17

申请号：CA3124965

申请日：2021-07-16

Applicant: INST NAT RECH SCIENT

Inventor： DONG JUNLIANG ,  TOMASINO ALESSANDRO ,  BALISTRERI GIACOMO ,  YURTSEVER AYCAN ,  AZANA JOSE ,  JESTIN YOANN ,  MORANDOTTI ROBERTO

IPC: H01P3/00

Abstract: 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.

公开(公告)号：CA3094962A1

公开(公告)日：2021-04-01

申请号：CA3094962

申请日：2020-10-01

Applicant: INST NAT RECH SCIENT

Inventor： PICCOLI RICCARDO ,  RAZZARI LUCA ,  ZANOTTO LUCA ,  DONG JUNLIANG ,  MORANDOTTI ROBERTO

IPC: G01N21/17

Abstract: 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.

公开(公告)号：CA3091463A1

公开(公告)日：2021-02-28

申请号：CA3091463

申请日：2020-08-28

Applicant: INST NAT RECH SCIENT ,  UNIV GLASGOW COURT

Inventor： ISLAM MEHEDI ,  ROZTOCKI PIOTR ,  KUES MICHAEL ,  REIMER CHRISTIAN ,  FISCHER BENNET ,  SCIARA STEFANIA ,  HELSTEN ROBIN ,  ZHANG YANBING ,  JESTIN YOANN ,  MORANDOTTI ROBERTO

IPC: G01B9/02

Abstract: A system and a method for phase extraction of a multi-path interferometer, the method comprising generating a reference signal of a coherence length longer than an arm length difference of the multi-path interferometer; splitting the reference signal into a frequency shifted reference signal and an unshifted reference signal; recombining the frequency shifted reference signal and the unshifted reference signal into a polarization- and frequency- multiplexed reference signal, and feeding the polarization- and frequency- multiplexed reference signal to the multi-path interferometer; detecting frequency shifted and unshifted output signals of the multi-path interferometer; and determining the interferometer phase from the detected signal.

公开(公告)号：CA2989040A1

公开(公告)日：2017-03-16

申请号：CA2989040

申请日：2016-09-08

Applicant: INST NAT RECH SCIENT

Inventor： ROZTOCKI PIOTR ,  REIMER CHRISTIAN ,  HELSTEN ROBIN ,  JESTIN YOANN ,  MORANDOTTI ROBERTO ,  KUES MICHAEL

IPC: G01B9/02 ,  A61B5/00 ,  G01H9/00 ,  G01K11/32

Abstract: 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.

公开(公告)号：CA2880828A1

公开(公告)日：2014-02-06

申请号：CA2880828

申请日：2013-08-01

Applicant: INST NAT RECH SCIENT

Inventor： SHARMA GARGI ,  SINGH KANWARPAL ,  MORANDOTTI ROBERTO ,  OZAKI TSUNEYUKI

IPC: G01J3/45

Abstract: 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 8898p can be measured, which is 18000 times higher than the phase difference measured by electro-optic sampling ( p/2 ).

公开(公告)号：CA3124329A1

公开(公告)日：2022-01-14

申请号：CA3124329

申请日：2021-07-09

Applicant: INST NAT RECH SCIENT

Inventor： VAN HOWE JAMES ,  ROZTOCKI PIOTR ,  JESTIN YOANN ,  AZANA JOSE ,  MORANDOTTI ROBERTO ,  BHARADWAJ SHASHWATH SHANKAR

IPC: G06N10/00

Abstract: A method for entropy scaling in quantum random number generators, comprising dividing one spatial mode into multiple spatial modes, delaying each spatial mode, and recombing the spatial modes; detecting first temporal states with synchronisation to a photon generation time and encoding the first temporal states into first time bins; detecting second temporal states in an arbitrary clock, and encoding the second temporal states into second time-bins. The method comprises dividing a source of single photons into two paths in a first beam splitter and recombining the two paths in a next beam splitter, repeatedly, in a cascade of n beam splitters, consecutive beam splitters being separated by a length of fiber, yielding a number l=2n of temporal states for each photon; detecting first temporal states by measuring a photon rate in a temporal window selected to measure photon arrival times, with synchronisation to a generation time of the photons, and encoding the first temporal states into first time bins, a number of the first temporal states being l=2n; detecting second temporal states by measuring a photon rate in the selected temporal window, in absence of synchronisation to the generation time of the photon, and encoding the second temporal states into second time-bins, a number of the second time bins being Nv; thereby generating a state space for each photon of N, x l.

公开(公告)号：CA2947207C

公开(公告)日：2021-11-16

申请号：CA2947207

申请日：2015-05-21

Applicant: INST NAT RECH SCIENT ,  UNIV HERIOT WATT

Inventor： CLERICI MATTEO ,  MAZHOROVA ANNA ,  MRIDHA MANOJ ,  JESTIN YOANN ,  MORANDOTTI ROBERTO

IPC: G02F1/01 ,  G01J3/10 ,  G01N21/3581 ,  G02F1/025 ,  G02F1/03 ,  G02F1/061 ,  G02F1/355 ,  H01L33/26 ,  H01P3/10 ,  H04B10/90

Abstract: A method and a system for generating terahertz signals, the system comprising a pump source, a two-wire waveguide; and at least one terahertz source, wherein the terahertz source is embedded within the two-wire waveguide and the pump source is configured to illuminate the terahertz source, the terahertz source generating terahertz signals directly within the two-wire waveguide. A terahertz source, embedded within a two-wire waveguide, said source being configured to be illuminated within the two-wire waveguide with a pump source for generating terahertz signals directly inside the two-wire waveguide. A two-wire waveguide system is thus provided, comprising a two-wire waveguide and a terahertz source embedded between the wires of the two-wire waveguide and configured to be illuminated within the two-wire waveguide with a pump source for generating terahertz signals directly inside the two-wire waveguide.

公开(公告)号：CA2880828C

公开(公告)日：2020-08-18

申请号：CA2880828

申请日：2013-08-01

Applicant: INST NAT RECH SCIENT

Inventor： SHARMA GARGI ,  SINGH KANWARPAL ,  MORANDOTTI ROBERTO ,  OZAKI TSUNEYUKI

IPC: G01J3/45

Abstract: 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 8898p can be measured, which is 18000 times higher than the phase difference measured by electro-optic sampling ( p/2 ).