Patents Assigned to Institut d'Optique Graduate School
  • Patent number: 10578555
    Abstract: Disclosed is an acoustic resonance spectrometry system for analysing a sample, which includes an optical pump-probe device adapted to generate a pump beam and a probe beam, the pump beam being consisted of a series of ultra-short pump light pulses having a repetition frequency in the spectral domain of the gigahertz, the pump beam being directed towards an optoacoustic transducer to generate a periodic grating of coherent acoustic phonons in the sample, the probe beam being directed towards the sample to form a scattering beam of the probe beam on the grating of phonons, a frequency variation device being adapted to vary the repetition frequency of the pump beam in a spectral range and a photo-detection system configured to measure a scattering signal as a function of the repetition frequency in the spectral range.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 3, 2020
    Assignees: UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONALE DE LA RECHERCHE SCIENTIFIQUE, ECOLE NATIONALE SUPERIEURE DES ARTS ET METIERS, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, INSTITUT D'OPTIQUE GRADUATE SCHOOl
    Inventors: Bertrand Audoin, Eric Cormier, Jérôme Lhermite, Giorgio Santarelli, Yannick Guillet, Adrien Aubourg
  • Patent number: 10317656
    Abstract: An optical tomography apparatus comprises: a polychromatic light source, a one-dimensional optical sensor, an interferometric microscope, a one-dimensional confocal spatial filtering system, an actuation system making it possible to perform a one-way scan depthwise of an object to be observed and a processor for reconstructing a two-dimensional image of a section of the object from a plurality of one-dimensional interferential images acquired by the image sensor during the one-way scan. An optical tomography method based on use of such an apparatus is also provided.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: June 11, 2019
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Institut d'Optique Graduate School, UNIVERSITE PARIS SUD 11
    Inventor: Arnaud Dubois
  • Patent number: 10041835
    Abstract: Coherent spectroscopic methods are described, to measure the total phase difference during an extended interrogation interval between the signal delivered by a local oscillator (10) and that given by a quantum system (QS).
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: August 7, 2018
    Assignees: Centre National De La Recherche Scientifique—CNRS, Institut D'Optique Graduate School, Observatoire De Paris
    Inventors: Andrea Bertoldi, Ralf Kohlhaas, Arnaud Landragin, Philippe Luc Bouyer
  • Publication number: 20170356803
    Abstract: Coherent spectroscopic methods are described, to measure the total phase difference during an extended interrogation interval between the signal delivered by a local oscillator (10) and that given by a quantum system (QS).
    Type: Application
    Filed: December 18, 2015
    Publication date: December 14, 2017
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNR S, Institut d'Optique Graduate School, Observatoire de Paris
    Inventors: Andrea Bertoldi, Ralf Kohlhaas, Arnaud Landragin, Philippe Luc Bouyer
  • Patent number: 9841656
    Abstract: A frequency converter system includes a source that emits a beam having a wide spectral band; and a frequency conversion cell including 1) a birefringent nonlinear crystal having a first phase-matching wavelength, with an input face that receives the beam, an output face that emits at least one frequency-converted beam, and at least two parallel faces different from the input and output faces; 2) means for applying an external mechanical force to at least one of said two parallel faces, resulting in a variation in the birefringence of the nonlinear crystal, the value of the applied external mechanical force being determined so as to obtain phase matching at a second phase-matching wavelength different from the first phase-matching wavelength; and 3) means for adjusting the external mechanical force for wavelength tunability in the frequency conversion cell.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: December 12, 2017
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE-CNRS, Institut d'Optique Graduate School, Université Paris-Sud
    Inventors: Loïc Deyra, François Balembois, Patrick Georges
  • Patent number: 9798218
    Abstract: A source of directional radiation in an IR band comprises at least a substrate and an external layer comprising controllable cells made of a metal insulator transition material that changes phase depending on its temperature relative to a temperature at which the corresponding wavelength is located in the IR band and that possesses a crystalline phase and an amorphous phase, and control means for controlling the phase change of the cells so as to form in this external layer a diffraction grating when the cells are controlled to the amorphous phase, in order thus to obtain a switchable directional source.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: October 24, 2017
    Assignees: Centre National De La Recherche Scientifique, Institut D'Optique Graduate School, Universite Paris SUD
    Inventors: Philippe Ben-Abdallah, Anne-Lise Coutrot, Mondher Besbes, Henri Benisty
  • Publication number: 20170090270
    Abstract: According to one aspect, the invention relates to a frequency conversion cell (10) comprising: a birefringent nonlinear crystal (12) characterized by a first phase-matching wavelength, having an input face (121A) for receiving at least one incident beam, an output face (121B) for emitting at least one frequency-converted beam, and at least two parallel faces (120A, 120B) different from the input and output faces; means (14, 14A) for applying an external mechanical force to at least one of said parallel faces (120A), called a force application face, resulting in a variation in the birefringence of the nonlinear crystal, the value of the applied external mechanical force being determined so as to obtain phase matching in the nonlinear crystal at a second phase-matching wavelength different from the first phase-matching wavelength.
    Type: Application
    Filed: May 19, 2015
    Publication date: March 30, 2017
    Applicants: Centre National de la Recherche Scientifique - CNRS, Institut d'Optique Graduate School, Université Paris-Sud
    Inventors: Loïc Deyra, François Balembois, Patrick Georges
  • Patent number: 8310749
    Abstract: An ultra-short high-power light pulse source including a first laser pump source (1), a mode-locked laser oscillator (2), a second laser pump source (4), a waveguide (6) capable of inserting spectral phases into the light pulses, and a compressor (8) capable of generating predetermined spectral phases into the light pulses. The waveguide (6) includes an element capable of compensating the predetermined spectral phases generated at least by the compressor (8), the second laser pump source (4) being capable of delivering a second pump light flow (5) having a power PL such that the spectral phases generated by the wave guide (6) are opposed or quasi opposed to the predetermined spectral phases generated by the compressor (8) in order to generate compressed ultra-short light pulses (9) at the output of the compressor (8) with a planar or quasi planar spectral phase.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: November 13, 2012
    Assignees: Amplitude Systemes, Institut d'Optique Graduate School, Centre National de la Recherche Scientifique
    Inventors: Eric Mottay, Patrick Georges, Yoann Zaouter, Marc Hanna, Dimitris Papadopoulos, Frederic Druon, Eric Cormier
  • Patent number: 8288712
    Abstract: A guided coherent atom source (1) includes elements for generating neutral atoms in a gaseous state (2), elements for cooling the atoms gas (3), elements for generating a magnetic field (4), including an electro-magnetic micro-chip (6) deposited on a surface (18) of a substrate (14), and capable of condensing the atoms in a magnetic trap, elements for generating an electro-magnetic RF field capable of extracting the condensed atoms, optical elements (10) for emitting and directing an optical coherent beam (12) toward the condensed atoms able to guide the condensed atoms, characterized in that the optical elements (10) and the electro-magnetic micro-chip (6) are integrated onto the same substrate (14). An atomic interferometer using such a source is also disclosed.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: October 16, 2012
    Assignees: Ixsea, Institut d'Optique Graduate School, Observatoire de Paris
    Inventors: Philippe Bouyer, Vincent Josse, William Guerin, Juliette Billy, Arnaud Landragin
  • Publication number: 20100188733
    Abstract: An ultra-short high-power light pulse source including a first laser pump source (1), a mode-locked laser oscillator (2), a second laser pump source (4), a waveguide (6) capable of inserting spectral phases into the light pulses, and a compressor (8) capable of generating predetermined spectral phases into the light pulses. The waveguide (6) includes an element capable of compensating the predetermined spectral phases generated at least by the compressor (8), the second laser pump source (4) being capable of delivering a second pump light flow (5) having a power PL such that the spectral phases generated by the wave guide (6) are opposed or quasi opposed to the predetermined spectral phases generated by the compressor (8) in order to generate compressed ultra-short light pulses (9) at the output of the compressor (8) with a planar or quasi planar spectral phase.
    Type: Application
    Filed: June 13, 2008
    Publication date: July 29, 2010
    Applicants: AMPLITUDE SYSTEMES, INSTITUT D'OPTIQUE GRADUATE SCHOOL,, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Eric Mottay, Patrick Georges, Yoann Zaouter, Marc Hanna, Dimitris Papadopoulos, Frederic Druon, Eric Cormier
  • Publication number: 20090242743
    Abstract: A guided coherent atom source (1) includes elements for generating neutral atoms in a gaseous state (2), elements for cooling the atoms gas (3), elements for generating a magnetic field (4), including an electro-magnetic micro-chip (6) deposited on a surface (18) of a substrate (14), and capable of condensing the atoms in a magnetic trap, elements for generating an electro-magnetic RF field capable of extracting the condensed atoms, optical elements (10) for emitting and directing an optical coherent beam (12) toward the condensed atoms able to guide the condensed atoms, characterized in that the optical elements (10) and the electro-magnetic micro-chip (6) are integrated onto the same substrate (14). An atomic interferometer using such a source is also disclosed.
    Type: Application
    Filed: March 18, 2009
    Publication date: October 1, 2009
    Applicants: IXSEA, INSTITUT D'OPTIQUE GRADUATE SCHOOL, OBSERVATOIRE DE PARIS
    Inventors: Philippe BOUYER, Vincent JOSSE, William GUERIN, Juliette BILLY, Arnaud LANDRAGIN