Patents by Inventor Frederic Druon
Frederic Druon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11256157Abstract: The invention relates to a device comprising: a laser source emitting a first beam with a central wavelength ?1 lying between 1010 nm and 1050 nm, a spectral supercontinuum generator downstream of the laser source, generating a second beam with a central wavelength ?2 lying between 1670 nm and 1730 nm from a part of the first beam, an optical parametric amplification system downstream of the spectral supercontinuum generator, generating a third beam with a central wavelength ?3 lying between 2540 nm and 2690 nm from at least a part of the second beam and a part of the first beam, and a second harmonic generator downstream of the optical parametric amplification system, the second harmonic generator generating a fourth beam with a central wavelength ?4 lying between 1270 nm and 1345 nm from at least a part of the third beam.Type: GrantFiled: June 5, 2018Date of Patent: February 22, 2022Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE POLYTECHNIQUEInventors: Frédéric Druon, Marc Hanna, Philippe Rigaud, Khmaies Guesmi, Emmanuel Beaurepaire, Willy Supatto, Pierre Mahou, Lamiae Abdeladim
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Publication number: 20210175677Abstract: A method for generating ultrashort pulses includes directing a master beam having ultrashort pulses and at least one slave beam through an optical gate material. The intensity of the slave beam upstream of the optical gate material is lower than that of the master beam upstream of the optical gate material. The optical gate material and the pulses of the master beam are chosen to induce a Kerr effect when the master beam passes through the optical gate material, the Kerr effect producing a modulation of the phase of the slave beam in association with pulses of the master beam when the slave beam passes through the optical gate material. The modulation of the phase of the slave beam is transformed into a modulation of the amplitude thereof using a complementary optical device to generate a slave beam downstream of the optical gate material having ultrashort pulses.Type: ApplicationFiled: April 19, 2019Publication date: June 10, 2021Applicants: ECOLE POLYTECHNIQUE, INSTITUT D'OPTIQUE GRADUATE SCHOOL (IOGS), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE PARIS SACLAYInventors: Dimitrios PAPADOPOULOS, Xavier DELEN, Frederic DRUON
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Publication number: 20200088642Abstract: The invention relates to a device comprising: a laser source emitting a first beam with a central wavelength ?1 lying between 1010 nm and 1050 nm, a spectral supercontinuum generator downstream of the laser source, generating a second beam with a central wavelength ?2 lying between 1670 nm and 1730 nm from a part of the first beam, an optical parametric amplification system downstream of the spectral supercontinuum generator, generating a third beam with a central wavelength ?3 lying between 2540 nm and 2690 nm from at least a part of the second beam and a part of the first beam, and a second harmonic generator downstream of the optical parametric amplification system, the second harmonic generator generating a fourth beam with a central wavelength ?4 lying between 1270 nm and 1345 nm from at least a part of the third beam.Type: ApplicationFiled: June 5, 2018Publication date: March 19, 2020Inventors: Frédéric DRUON, Marc HANNA, Philippe RIGAUD, Khmaies GUESMI, Emmanuel BEAUREPAIRE, Willy SUPATTO, Pierre MAHOU, Lamiae ABDELADIM
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Patent number: 9240669Abstract: A method and passive device for the coherent combination of two amplified and/or spectrally broadened optical beams using at least one bidirectional optical component (A1, A2), the device includes an amplitude division ring interferometer having optical splitting and recombining elements disposed so as to receive an incident optical beam (S0) and to split it spatially into a first secondary input beam (H1) and a second secondary input beam (H2), optical guiding elements disposed so as to define an optical path in the form of a ring in the interferometer, the at least one bidirectional optical component being disposed on the optical path of the ring interferometer, the splitting and recombining elements being disposed in such a way as to receive and to recombine spatially, temporally and coherently the first secondary output beam (H1?) and the second secondary output beam (H2?), so as to form a coherent output beam.Type: GrantFiled: July 11, 2012Date of Patent: January 19, 2016Assignees: ECOLE POLYTECHNIQUE, AMPLITUDE SYSTEMESInventors: Dimitris Papadopoulos, Marc Hanna, Louis Daniault, Yoann Zaouter, Frederic Druon
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Publication number: 20140153084Abstract: A method and passive device for the coherent combination of two amplified and/or spectrally broadened optical beams using at least one bidirectional optical component (A1, A2), the device includes an amplitude division ring interferometer having optical splitting and recombining elements disposed so as to receive an incident optical beam (S0) and to split it spatially into a first secondary input beam (H1) and a second secondary input beam (H2), optical guiding elements disposed so as to define an optical path in the form of a ring in the interferometer, the at least one bidirectional optical component being disposed on the optical path of the ring interferometer, the splitting and recombining elements being disposed in such a way as to receive and to recombine spatially, temporally and coherently the first secondary output beam (H1?) and the second secondary output beam (H2?), so as to form a coherent output beam.Type: ApplicationFiled: July 11, 2012Publication date: June 5, 2014Applicants: AMPLITUDE SYSTEMES, ECOLE POLYTECHNIQUEInventors: Dimitris Papadopoulos, Marc Hanna, Louis Daniault, Yoann Zaouter, Frederic Druon
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Patent number: 8310749Abstract: 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: GrantFiled: June 13, 2008Date of Patent: November 13, 2012Assignees: Amplitude Systemes, Institut d'Optique Graduate School, Centre National de la Recherche ScientifiqueInventors: Eric Mottay, Patrick Georges, Yoann Zaouter, Marc Hanna, Dimitris Papadopoulos, Frederic Druon, Eric Cormier
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Publication number: 20110306954Abstract: A a pulsed laser (10) with an optical fibre and frequency shifting for amplifying high-energy sub-picosecond pulses, includes an oscillator (1), a fibre stretcher (3), one or more preamplification stages and one power amplification stage including an erbium doped or erbium-ytterbium codoped optical fibre section (4, 7), a pump (8) suitable for optically pumping by coupling in the optical fibre of the power amplifier (7) and a compressor (9). According to the invention, the pump (8) of the power stage generates at least one pump wavelength ?P between 1530 and 1565 nm, the laser pulse emission wavelength (20) is between 1565 and 1625 nm and the energy of the laser pulses (20) is between 10 nJ and several dozen ?J. A tool for eye surgery including such a laser is also described.Type: ApplicationFiled: December 16, 2009Publication date: December 15, 2011Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Franck Morin, Marc Hanna, Frederic Druon, Patrick Georges
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Publication number: 20100188733Abstract: 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: ApplicationFiled: June 13, 2008Publication date: July 29, 2010Applicants: AMPLITUDE SYSTEMES, INSTITUT D'OPTIQUE GRADUATE SCHOOL,, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Eric Mottay, Patrick Georges, Yoann Zaouter, Marc Hanna, Dimitris Papadopoulos, Frederic Druon, Eric Cormier
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Patent number: 6373864Abstract: A sub-nanosecond passively Q-switched microchip laser is disclosed. It combines an optically pumped, passively Q-switched, high-frequency, microchip laser producing short pulses with an optically end-pumped amplifier producing high small-signal gain while pumped at low power. The microchip laser for emitting pulsed laser radiation is a monolithic body comprising two reflective elements defining an optical resonator for laser radiation, a laser gain medium, e.g., Nd:YAG, and a saturable absorber medium, e.g., Cr4+:YAG placed inside said resonator. The optical amplifier stage for amplifying the laser radiation comprises an amplifying medium, e.g., Nd:YVO4. The microchip laser and the amplifier are optically end-pumped, preferably by high-brightness diodes. This entirely passive laser system directly produces &mgr;J pulses at repetition rates of about 45 kHz.Type: GrantFiled: January 21, 2000Date of Patent: April 16, 2002Assignee: Nanolase S.A.Inventors: Patrick Georges, Francois Balembois, Frederic Druon, Alain Brun, Pierre Jean Devilder