Patents by Inventor Erez Hasman
Erez Hasman 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: 20240039246Abstract: A surface-emitting light source system for generating coherent light having two spin modes comprises a two-dimensional material exhibiting a direct band gap. The two-dimensional material is coupled to a planar heterostructure cavity having an inversion asymmetric core region at least partially surrounded by an inversion symmetric cladding region.Type: ApplicationFiled: July 27, 2023Publication date: February 1, 2024Applicant: Technion Research & Development Foundation LimitedInventors: Erez HASMAN, Kexiu RONG
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Patent number: 10126466Abstract: A multifunctional dielectric gradient metasurface optical device has a layer of nanoscale dielectric gradient metasurface optical antenna elements deposited on a substrate layer, arranged with spatially varying orientations, shapes, or sizes in the plane of the device such that the optical device has a spatially varying optical phase response capable of optical wavefront shaping. The spatially varying optical phase response is a spatial interleaving of multiple distinct phase profiles corresponding to multiple optical sub-elements, thereby providing multifunctional wavefront shaping in the single optical element.Type: GrantFiled: January 29, 2017Date of Patent: November 13, 2018Assignees: The Board of Trustees of the Leland Stanford Junior University, Technion Research and Development Foundation LimitedInventors: Dianmin Lin, Mark L. Brongersma, Erez Hasman, Pieter G. Kik, Aaron L. Holsteen
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Publication number: 20170219739Abstract: A multifunctional dielectric gradient metasurface optical device has a layer of nanoscale dielectric gradient metasurface optical antenna elements deposited on a substrate layer, arranged with spatially varying orientations, shapes, or sizes in the plane of the device such that the optical device has a spatially varying optical phase response capable of optical wavefront shaping. The spatially varying optical phase response is a spatial interleaving of multiple distinct phase profiles corresponding to multiple optical sub-elements, thereby providing multifunctional wavefront shaping in the single optical element.Type: ApplicationFiled: January 29, 2017Publication date: August 3, 2017Inventors: Dianmin Lin, Mark L. Brongersma, Erez Hasman, Pieter G. Kik, Aaron L. Holsteen
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Patent number: 9507064Abstract: A dielectric gradient metasurface optical device provides optical wavefront shaping using an ultrathin (less than 100 nm thick) layer of nanoscale geometric Pancharatnam-Berry phase optical elements deposited on a substrate layer. The optical elements are nanobeams composed of high refractive index dielectric material. The nanobeams have uniform size and shape and are arranged with less than 200 nm separations and spatially varying orientations in the plane of the device such that the optical device has a spatially varying optical phase response capable of optical wavefront shaping. The high refractive index dielectric material may be materials compatible with semiconductor electronic fabrication, including silicon, polysilicon, germanium, gallium arsenide, titanium dioxide, or iron oxide.Type: GrantFiled: July 27, 2015Date of Patent: November 29, 2016Assignees: The Board of Trustees of the Leland Stanford Junior University, TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LIMITEDInventors: Mark L. Brongersma, Dianmin Lin, Pengyu Fan, Erez Hasman
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Publication number: 20160025914Abstract: A dielectric gradient metasurface optical device provides optical wavefront shaping using an ultrathin (less than 100 nm thick) layer of nanoscale geometric Pancharatnam-Berry phase optical elements deposited on a substrate layer. The optical elements are nanobeams composed of high refractive index dielectric material. The nanobeams have uniform size and shape and are arranged with less than 200 nm separations and spatially varying orientations in the plane of the device such that the optical device has a spatially varying optical phase response capable of optical wavefront shaping. The high refractive index dielectric material may be materials compatible with semiconductor electronic fabrication, including silicon, polysilicon, germanium, gallium arsenide, titanium dioxide, or iron oxide.Type: ApplicationFiled: July 27, 2015Publication date: January 28, 2016Inventors: Mark L. Brongersma, Dianmin Lin, Pengyu Fan, Erez Hasman
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Patent number: 9158043Abstract: A method for space-variant manipulating of thermal emission from a surface of a material that supports surface waves includes providing a grating with a spatially varying grating parameter on the surface of the material.Type: GrantFiled: September 12, 2012Date of Patent: October 13, 2015Assignee: TECHNION RESEARCH & DEVELOPMENT FOUNDATION LTD.Inventors: Erez Hasman, Nir Dahan, Avi Niv, Gabriel Biener, Vladimir Kleiner
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Publication number: 20130027777Abstract: A method for space-variant manipulating of thermal emission from a surface of a material that supports surface waves includes providing a grating with a spatially varying grating parameter on the surface of the material.Type: ApplicationFiled: September 12, 2012Publication date: January 31, 2013Inventors: Erez Hasman, Nir Dahan, Avi Niv, Gabriel Biener, Vladimir Kleiner
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Patent number: 8274738Abstract: A method for Space-variant polarization manipulation of enhanced nondirectional thermal emission in a narrow spectral peak is disclosed, comprising providing a subwavelength grating irradiating non-directional thermal emission on the grating and discretely controlling the local orientation of the grating.Type: GrantFiled: May 4, 2006Date of Patent: September 25, 2012Assignee: Technion Research & Development Foundation Ltd.Inventors: Erez Hasman, Nir Dahan, Avi Niv, Gabriel Biener, Vladimir Kleiner
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Patent number: 8045830Abstract: A wave-guiding system and method for mode-selective transmission of a spatially coherent light beam is disclosed. The system comprises a wave-guide with an inlet and an outlet for transmitting one or more modes; a first mode-shaping optical element for shaping the spatially coherent light beam before it enters through the inlet of the wave-guide to a desired mode of the wave-guide; and a second mode-shaping optical element for shaping light beam after it exits from the outlet of the wave-guide for obtaining a desired vectorial field.Type: GrantFiled: August 28, 2007Date of Patent: October 25, 2011Assignee: Technion Research and Development Foundation Ltd.Inventor: Erez Hasman
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Publication number: 20100002993Abstract: A wave-guiding system and method for mode-selective transmission of a spatially coherent light beam is disclosed. The system comprises a wave-guide with an inlet and an outlet for transmitting one or more modes; a first mode-shaping optical element for shaping the spatially coherent light beam before it enters through the inlet of the wave-guide to a desired mode of the wave-guide; and a second mode-shaping optical element for shaping light beam after it exits from the outlet of the wave-guide for obtaining a desired vectorial field.Type: ApplicationFiled: August 28, 2007Publication date: January 7, 2010Inventor: Erez Hasman
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Patent number: 7570427Abstract: A space variant polarization optical element for spatially manipulating polarization-dependent geometrical phases of an incident light beam. The element comprises a substrate with a plurality of zones of gratings with a continuously varying orientation. The orientation denoted by ?(x-y) is equal to half of a desired geometrical phase (DGP) modulus 2?. Each grating has a local period that is smaller than the wavelength of the incident light beam. In other embodiments of the present invention the substrate comprises a plurality of zones of gratings with a continuously varying orientation.Type: GrantFiled: June 26, 2003Date of Patent: August 4, 2009Assignee: Technion Research & Development Foundation Ltd.Inventor: Erez Hasman
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Publication number: 20090009856Abstract: A method for Space-variant polarization manipulation of enhanced nondirectional thermal emission in a narrow spectral peak is disclosed, comprising providing a subwavelength grating irradiating non-directional thermal emission on the grating and discretely controlling the local orientation of the grating.Type: ApplicationFiled: May 4, 2006Publication date: January 8, 2009Inventors: Erez Hasman, Nir Dahan, Avi Niv, Gabriel Biener, Vladimir Kleiner
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Patent number: 7190521Abstract: An optical device includes a planar subwavelength grating (10) formed in a dielectric material and having a laterally varying, continuous grating vector. When used to modulate a beam of laterally uniform polarized electromagnetic radiation incident thereon, the device passes the incident beam with a predetermined, laterally varying transmissivity and/or retardation. When used to effect polarization state transformation, the device transforms a beam of electromagnetic radiation incident thereon into a transmitted beam having a predetermined, laterally varying polarization state. The device (214) can be used to provide radially polarized electromagnetic radiation for accelerating subatomic particles or for cutting a workpiece. The device (108) also can be used, in conjuction with a mechanism for measuring the lateral variation of the intensity of the transmitted beam, for measuring all four Stokes parameters that define the polarization state of the incident beam.Type: GrantFiled: September 13, 2002Date of Patent: March 13, 2007Assignee: Technion Research and Development Foundation Ltd.Inventors: Erez Hasman, Zeev Bomzon, Vladimir Kleiner
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Publication number: 20060126183Abstract: A space variant polarization optical element for spatially manipulating polarizationdependent geometrical phases of an incident light beam. The element comprises a substrate with a plurality of zones of gratings with a continuously varying orientation. The orientation denoted by ?(x-y) is equal to half of a desired geometrical phase (DGP) modulus 2?. Each grating has a local period that is smaller than the wavelength of the incident light beam. In other embodiments of the present invention the substrate comprises a plurality of zones of gratings with a continuously varying orientation.Type: ApplicationFiled: June 26, 2003Publication date: June 15, 2006Inventor: Erez Hasman
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Patent number: 6972906Abstract: An optical device includes a plurality of metallic stripes, arranged in a substantially planar, subwavelength grating having a laterally varying, continuous grating vector, deposited on a substrate such as GaAs or ZnSe. When used as a polarizer, the device passes a laterally uniform polarized beam of electromagnetic radiation incident thereon with a predetermined, laterally varying transmissivity. When used to effect polarization state transformation, the device transforms a beam of electromagnetic radiation incident thereon into a transmitted beam having a predetermined, laterally varying polarization state. The device can be used to provide radially polarized electromagnetic radiation for accelerating subatomic particles or for cutting a workpiece. The device also can be used, in conjunction with a mechanism for measuring the lateral variation of the intensity of the transmitted beam, for measuring the polarization state of the incident beam.Type: GrantFiled: December 18, 2001Date of Patent: December 6, 2005Assignee: Technion Research and Development Foundation Ltd.Inventors: Erez Hasman, Zeev Bomzon, Vladimir Kleiner
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Patent number: 6850544Abstract: An optical resonator supporting two sets of simultaneously co-existent oscillation modes (30 and 31), having polarizations orthogonal to each other. Mode control elements (28 and 29), such as apertures and phase elements, are introduced into the resonator to allow only preferred modes to exist. The placement and orientation of the sets are designed such that the high intensity zones of one set fall on the nodes or low intensity zones of the other set in an interlaced pattern. Thus, in a laser resonator, better utilization of the gain medium (24) is achieved and the beam quality and brightness over multimode lasing are improved. This configuration improves the performance of high Fresnel number resonators, in both pulsed and continuous lasers, for applications such as scribing, drilling, cutting, target designation and rangefinding. An application of the intra-cavity coherent summation of orthogonally polarized modes is described, whereby azimuthally or radially polarized beams may be obtained.Type: GrantFiled: March 15, 2002Date of Patent: February 1, 2005Assignee: Yeda Research and Development Co., Ltd.Inventors: Asher A. Friesem, Shmuel Blit, Ram Oron, Erez Hasman, Nir Davidson
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Publication number: 20040165269Abstract: An optical device includes a planar subwavelength grating (10) formed in a dielectric material and having a laterally varying, continuous grating vector. When used to modulate a beam of laterally uniform polarized electromagnetic radiation incident thereon, the device passes the incident beam with a predetermined, laterally varying transmissivity and/or retardation. When used to effect polarization state transformation, the device transforms a beam of electromagnetic radiation incident thereon into a transmitted beam having a predetermined, laterally varying polarization state. The device (214) can be used to provide radially polarized electromagnetic radiation for accelerating subatomic particles or for cutting a workpiece. The device (108) also can be used, in conjuction with a mechanism for measuring the lateral variation of the intensity of the transmitted beam, for measuring all four Stokes parameters that define the polarization state of the incident beam.Type: ApplicationFiled: January 23, 2004Publication date: August 26, 2004Inventors: Erez Hasman, Zeev Bomzon, Vladimir Kleiner
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Publication number: 20040027670Abstract: An optical device includes a plurality of metallic stripes, arranged in a substantially planar, subwavelength grating having a laterally varying, continuous grating vector, deposited on a substrate such as GaAs or ZnSe. When used as a polarizer, the device passes a laterally uniform polarized beam of electromagnetic radiation incident thereon with a predetermined, laterally varying transmissivity. When used to effect polarization state transformation, the device transforms a beam of electromagnetic radiation incident thereon into a transmitted beam having a predetermined, laterally varying polarization state. The device can be used to provide radially polarized electromagnetic radiation for accelerating subatomic particles or for cutting a workpiece. The device also can be used, in conjunction with a mechanism for measuring the lateral variation of the intensity of the transmitted beam, for measuring the polarization state of the incident beam.Type: ApplicationFiled: June 23, 2003Publication date: February 12, 2004Inventors: Erez Hasman, Zeev Bomzon, Vladimir Kleiner
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Publication number: 20020154672Abstract: An optical resonator supporting two sets of simultaneously co-existent oscillation modes (30 and 31), having polarizations orthogonal to each other. Mode control elements (28 and 29), such as apertures and phase elements, are introduced into the resonator to allow only preferred modes to exist. The placement and orientation of the sets are designed such that the high intensity zones of one set fall on the nodes or low intensity zones of the other set in an interlaced pattern. Thus, in a laser resonator, better utilization of the gain medium (24) is achieved and the beam quality and brightness over multimode lasing are improved. This configuration improves the performance of high Fresnel number resonators, in both pulsed and continuous lasers, for applications such as scribing, drilling, cutting, target designation and rangefinding. An application of the intra-cavity coherent summation of orthogonally polarized modes is described, whereby azimuthally or radially polarized beams may be obtained.Type: ApplicationFiled: March 15, 2002Publication date: October 24, 2002Applicant: Yeda Research and Development Co. Ltd.Inventors: Asher A. Friesem, Shmuel Blit, Ram Oron, Erez Hasman, Nir Davidson
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Publication number: 20020118456Abstract: An optical device includes a plurality of metallic stripes, arranged in a substantially planar, subwavelength grating having a laterally varying, continuous grating vector, deposited on a substrate such as GaAs or ZnSe. When used as a polarizer, the device passes a laterally uniform polarized beam of electromagnetic radiation incident thereon with a predetermined, laterally varying transmissivity. When used to effect polarization state transformation, the device transforms a beam of electromagnetic radiation incident thereon into a transmitted beam having a predetermined, laterally varying polarization state. The device can be used to provide radially polarized electromagnetic radiation for accelerating subatomic particles or for cutting a workpiece. The device also can be used, in conjunction with a mechanism for measuring the lateral variation of the intensity of the transmitted beam, for measuring the polarization state of the incident beam.Type: ApplicationFiled: December 18, 2001Publication date: August 29, 2002Applicant: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.Inventors: Erez Hasman, Zeev Bomzon, Vladimir Kleiner