Patents by Inventor Mordechai Segev
Mordechai Segev 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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Publication number: 20230335973Abstract: A semiconductor laser element a first ring resonator. The first ring resonator includes a first semiconductor stack including a first n-side semiconductor layer, a first p-side semiconductor layer, and a first active layer located between the first n-side semiconductor layer and the first A-side semiconductor layer, wherein the first ring resonator comprises a diffraction grating. The semiconductor laser element further includes a second ring resonator optically coupled to the first ring resonator by evanescent field coupling. The second ring resonator includes a second semiconductor stack including a second n-side semiconductor layer, a second p-side semiconductor layer, and a second active layer located between the second n-side semiconductor layer and the second p-side semiconductor layer, wherein a peak wavelength of light emitted by the second ring resonator is the same as a peak wavelength of light emitted by the first ring resonator.Type: ApplicationFiled: April 14, 2022Publication date: October 19, 2023Applicants: Technion Research & Development Foundation Limited, Nichia CorporationInventors: Mordechai SEGEV, Gal HARARI, Shinji TOHI, Kunimichi OMAE, Takumi ITO
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Publication number: 20230223735Abstract: A laser source is presented a plurality of unit cells of a selected number of partially physically coupled lasing units arranged within a plane and configured to form a topological structure, wherein each of the lasing units is configured to emit radiation component substantially perpendicular to said plane, said plurality of the unit cells comprising at least a first sub-array of the unit cells located in a first region interfacing with a second region of a different type than said first region, thereby defining an arrangement of optically coupled lasing units along an interface region between the first and second adjacent regions, forming at least one topological state along a topological path within said interface region.Type: ApplicationFiled: April 27, 2021Publication date: July 13, 2023Inventors: Mordechai SEGEV, Sven HOFLING, Sebastian KLEMBT, Alexander DIKOPOLTSEV, Tristan HARDER, Eran LUSTIG, Yaakov LUMER
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Patent number: 11283244Abstract: A topological laser system is described. The laser system comprises an array of optical elements arranged in an array and coupled between them such that the array is configured for supporting one or more topological modes. The plurality of optical elements comprises optical elements carrying gain material configured for emitting optical radiation in response to pumping energy. The laser system further comprises a pumping unit configured to provide pumping of a group of the optical elements of the array within at least a portion of the spatial region corresponding with said topological mode; and at least one output port optically coupled to one or more of the optical elements associated with said topological mode. The at least one output ports is configured for extracting a portion of light intensity from said laser system.Type: GrantFiled: March 29, 2018Date of Patent: March 22, 2022Assignees: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION, LTD., THE UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.Inventors: Mordechai Segev, Gal Harari, Demetrios N. Christodoulides, Miguel Angel Bandres Motola
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Patent number: 10983059Abstract: An imaging apparatus (20) includes an interface (50) and a processor (30). The interface is configured to receive a sequence of images of an object (38) acquired at respective acquisition times, the object is labeled with fluorescent emitters. The images depict intensity fluctuations of emitters on an acquisition grid, and the intensity fluctuations being uncorrelated among the emitters and during an overall time over which the images in the sequence are acquired. The a processor is configured to calculate a temporal correlation function of the intensity fluctuations over the sequence of images, and to estimate locations of the emitters on a super-resolution grid having a higher resolution than the acquisition grid, by applying to the temporal correlation function a recovery process in which the locations on the super-resolution grid are assumed to be sparse or compressible in a predefined domain. The recovery process includes a sparse-recovery process or a regularized process.Type: GrantFiled: January 16, 2018Date of Patent: April 20, 2021Assignee: TECHNION RESEARCH & DEVELOPMENT FOUNDATION LTD.Inventors: Yonina Eldar, Mordechai Segev, Oren Solomon, Maor Mutzafi
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Publication number: 20200119524Abstract: A topological laser system is described. The laser system comprises an array of optical elements arranged in an array and coupled between them such that the array is configured for supporting one or more topological modes. The plurality of optical elements comprises optical elements carrying gain material configured for emitting optical radiation in response to pumping energy. The laser system further comprises a pumping unit configured to provide pumping of a group of the optical elements of the array within at least a portion of the spatial region corresponding with said topological mode; and at least one output port optically coupled to one or more of the optical elements associated with said topological mode. The at least one output ports is configured for extracting a portion of light intensity from said laser system.Type: ApplicationFiled: March 29, 2018Publication date: April 16, 2020Inventors: Mordechai SEGEV, Gal HARARI, Demetrios N. CHRISTODOULIDES, Miguel Angel BANDRES MOTOLA
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Publication number: 20200003693Abstract: An imaging apparatus (20) includes an interface (50) and a processor (30). The interface is configured to receive a sequence of images of an object (38) acquired at respective acquisition times, the object is labeled with fluorescent emitters. The images depict intensity fluctuations of emitters on an acquisition grid, and the intensity fluctuations being uncorrelated among the emitters and during an overall time over which the images in the sequence are acquired. The a processor is configured to calculate a temporal correlation function of the intensity fluctuations over the sequence of images, and to estimate locations of the emitters on a super-resolution grid having a higher resolution than the acquisition grid, by applying to the temporal correlation function a recovery process in which the locations on the super-resolution grid are assumed to be sparse or compressible in a predefined domain. The recovery process includes a sparse-recovery process or a regularized process.Type: ApplicationFiled: January 16, 2018Publication date: January 2, 2020Inventors: Yonina Eldar, Mordechai Segev, Oren Solomon, Maor Mutzafi
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Patent number: 9544065Abstract: A method of transmitting light is disclosed. The method comprises: transmitting a first light pulse into a medium to form in the medium a filamented region that is capable of guiding light, and transmitting a second light into the filamented region, wherein the second light is a pulsed light or continues wave light, and wherein the second light is transmitted at least 10 nanoseconds after the first light pulse.Type: GrantFiled: July 10, 2014Date of Patent: January 10, 2017Assignee: Technion Research & Development Foundation LimitedInventors: Mordechai Segev, Oren Cohen, Liad Levi
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Patent number: 9277330Abstract: A system and method for directional sound sensing directs an optical sensing beam to an object of interest having a rough surface that vibrates acoustically. The light is reflected thereby and scattered as a speckle pattern that includes multiple speckles having a random distribution of phase offsets. A detector array having multiple detector elements receives and detects the speckle pattern and produces signals that are linearly proportional to phase modulation of the speckles. A summer receives signals from at least two of the detector elements that are offset at different phases and sums the received signals to generate a non-vanishing signal representative of an acoustic signal.Type: GrantFiled: September 25, 2009Date of Patent: March 1, 2016Assignee: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.Inventors: Abraham Aharoni, Mordechai Segev, Zvi Katz
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Patent number: 9159119Abstract: A method and system are presented for reconstructing an input field where the latter is sensed by a measurement system. The method comprises: providing measured data corresponding to output field of said measurement system; providing data about sparsity of the input field, and data about effective response function of the measurement system; and processing the measured data based on said known data, the processing comprising: determining a sparse vector as a function of said measured data, said data about the sparsity of the input field, and said data about the effective response function; and using the sparse vector for reconstructing the input information. The invention allows for sub-wavelength resolution in imaging applications, and allows for detection of very short pulses by slow detectors in some other applications.Type: GrantFiled: January 5, 2012Date of Patent: October 13, 2015Assignee: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.Inventors: Yoav Shechtman, Alexander Szameit, Mordechai Segev, Oren Cohen, Yonina Eldar, Snir Gazit, Pavel Sidorenko
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Publication number: 20150016826Abstract: A method of transmitting light is disclosed. The method comprises: transmitting a first light pulse into a medium to form in the medium a filamented region that is capable of guiding light, and transmitting a second light into the filamented region, wherein the second light is a pulsed light or continues wave light, and wherein the second light is transmitted at least 10 nanoseconds after the first light pulse.Type: ApplicationFiled: July 10, 2014Publication date: January 15, 2015Inventors: Mordechai SEGEV, Oren Cohen, Liad Levi
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Patent number: 8669119Abstract: A system for manipulating a fluid medium is disclosed. The system comprises a plurality of particles suspended in the fluid medium, and a light source configured for irradiating the particles by light to induce nonlinear optical effects. The particles are constituted such that the nonlinear optical effects result in drag forces exerted by the particles on the fluid medium. The magnitude of the drag forces is sufficient to establish hydrodynamic flow of the fluid medium.Type: GrantFiled: March 25, 2009Date of Patent: March 11, 2014Assignee: Technion Research & Development Foundation LimitedInventors: Mordechai Segev, Demetrios N. Christodoulides, Carmel Rotschild
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Publication number: 20120188368Abstract: A method and system are presented for reconstructing an input field where the latter is sensed by a measurement system. The method comprises: providing measured data corresponding to output field of said measurement system; providing data about sparsity of the input field, and data about effective response function of the measurement system; and processing the measured data based on said known data, the processing comprising: determining a sparse vector as a function of said measured data, said data about the sparsity of the input field, and said data about the effective response function; and using the sparse vector for reconstructing the input information. The invention allows for sub-wavelength resolution in imaging applications, and allows for detection of very short pulses by slow detectors in some other applications.Type: ApplicationFiled: January 5, 2012Publication date: July 26, 2012Applicant: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.Inventors: Yoav SHECHTMAN, Alexander SZAMEIT, Mordechai SEGEV, Oren COHEN, Yonina ELDAR, Snir GAZIT, Pavel SIDORENKO
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Publication number: 20110023973Abstract: A system for manipulating a fluid medium is disclosed. The system comprises a plurality of particles suspended in the fluid medium, and a light source configured for irradiating the particles by light to induce nonlinear optical effects. The particles are constituted such that the nonlinear optical effects result in drag forces exerted by the particles on the fluid medium. The magnitude of the drag forces is sufficient to establish hydrodynamic flow of the fluid medium.Type: ApplicationFiled: March 25, 2009Publication date: February 3, 2011Applicant: Technion Research & Development Foundation Ltd.Inventors: Mordechai Segev, Demetrios N. Christodoulides, Carmel Rotschild
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Patent number: 7830594Abstract: An apparatus for all-optical deflection of an incident optical signal beam, the apparatus comprising: a photorefractive semiconductor crystal; and an electric field source, for applying an electric field across the crystal either through electrodes or by positioning the crystal at a place where an electric field is present. In another embodiment of the invention a second optical beam source, for illuminating the crystal with a background optical beam. The apparatus is used for steering the signal beam, lensing it or for other applications.Type: GrantFiled: March 29, 2005Date of Patent: November 9, 2010Assignee: Technion Research and Development Foundation Ltd.Inventors: Mordechai Segev, Sharon Shwartz
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Publication number: 20100189291Abstract: An optical pin-point microphone has a light source for directing a sensing beam to an object of interest so as to be reflected thereby as a reflected signal beam, a detector having multiple detector elements for receiving the reflected signal beam, and a summer for receiving signals from at least two of the detector elements and detecting, rectifying, amplifying and summing the received signals to generate a non-vanishing signal representative of an acoustic signal.Type: ApplicationFiled: September 25, 2009Publication date: July 29, 2010Applicant: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.Inventors: Abraham Aharoni, Mordechai Segev, Zvi Katz
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Patent number: 7588535Abstract: An apparatus, system and method for providing an image enhancing effect for a photographic image of a target region within an intravascular environment. The image enhancing effects may be a physical process based upon the nature of the detected light or based upon different aspects of expected light reflection behavior, for example, by running predefined image reconstruction algorithms. The apparatus has a plurality of different embodiments, each of which reduces the ambient “noise” detected along with the light reflected from the target region in order to increase the signal/noise ratio, thereby to enhance the quality of the image produced.Type: GrantFiled: December 11, 2002Date of Patent: September 15, 2009Assignee: C2Cure Inc.Inventors: Doron Adler, Alex Zaretski, Ofer Pillar, Keren Shafrir, Mordechai Segev
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Publication number: 20060227410Abstract: An apparatus for all-optical deflection of an incident optical signal beam, the apparatus comprising: a photorefractive semiconductor crystal; and an electric field source, for applying an electric field across the crystal either through electrodes or by positioning the crystal at a place where an electric field is present. In another embodiment of the invention a second optical beam source, for illuminating the crystal with a background optical beam. The apparatus is used for steering the signal beam, lensing it or for other applications.Type: ApplicationFiled: March 29, 2005Publication date: October 12, 2006Inventors: Mordechai Segev, Sharon Shwartz
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Patent number: 7027681Abstract: A device for bending a laser beam is provided. The device includes a beam deflection device that produces the beam having a selected number of addressable points. A soliton forming mechanism is positioned at the output of the beam deflection device so it receives the beam and increases the number of addressable points by a certain magnitude.Type: GrantFiled: July 30, 2003Date of Patent: April 11, 2006Assignees: Massachusetts Institute of Technology, Technion Research and Development Foundation, Ltd.Inventors: Marin Soljacic, Mordechai Segev, Chiyan Luo, John D. Joannopoulos
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Publication number: 20050165279Abstract: An apparatus, system and method for providing a photographic image of a target region within an intravascular environment. The apparatus has a plurality of different embodiments, each of which reduces the ambient “noise” detected along with the light reflected from the target region in order to increase the signal/noise ratio, thereby to enhance the quality of the image produced.Type: ApplicationFiled: February 25, 2005Publication date: July 28, 2005Inventors: Doron Adler, Alex Zaretski, Ofer Pillar, Keren Shafrir, Mordechai Segev
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Publication number: 20050063427Abstract: A device for bending a laser beam is provided. The device includes a beam deflection device that produces the beam having a selected number of addressable points. A soliton forming mechanism is positioned at the output of the beam deflection device so it receives the beam and increases the number of addressable points by a certain magnitude.Type: ApplicationFiled: July 30, 2003Publication date: March 24, 2005Inventors: Marin Soljacic, Mordechai Segev, Chiyan Luo, John Joannopoulos