Patents by Inventor Xiaolei Shi
Xiaolei Shi 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: 7524590Abstract: The present invention provides a method for storing holographic data comprising providing an optically transparent substrate comprising a photochemically active dye and a photo-acid generator; irradiating the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to convert, within a volume element of the substrate, at least some of the photochemically active dye into a photo-product, producing within the irradiated volume element concentration variations of the photo-product corresponding to the holographic interference pattern, thereby producing a first optically readable datum corresponding to the volume element; and irradiating the optically transparent substrate at a second wavelength and intensity sufficient to activate the photo-acid generator to stabilize the optically readable datum.Type: GrantFiled: December 7, 2005Date of Patent: April 28, 2009Assignee: General Electric CompanyInventors: Christoph Georg Erben, Eugene Pauling Boden, Xiaolei Shi
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Patent number: 7483465Abstract: A near field optical apparatus comprising a conductive sheet or plane having an aperture therein with the conductive plane including at least one protrusion which extends into the aperture. The location, structure and configuration of the protrusion or protrusions can be controlled to provide desired near field localization of optical power output associated with the aperture. Preferably, the location, structure and configuration of the protrusion are tailored to maximize near field localization at generally the center of the aperture. The aperture preferably has a perimeter dimension which is substantially resonant with the output wavelength of the light source, or is otherwise able to support a standing wave of significant amplitude. The apparatus may be embodied in a vertical cavity surface emitting layer or VCSEL having enhanced nearfield brightness by providing a conductive layer on the laser emission facet, with, a protrusion of the conductive layer extending into an aperture in the emission facet.Type: GrantFiled: June 25, 2004Date of Patent: January 27, 2009Assignee: Research Investment Network, Inc.Inventors: Robert L. Thornton, Xiaolei Shi
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Publication number: 20080247011Abstract: A method for storing data including: providing a first substrate having a plurality of micro-holograms therein, the micro-holograms being indicative of the data; providing a second hologram-supporting substrate; illuminating the plurality of micro-holograms in the first substrate through the second substrate, thereby producing a holographic pattern in the second substrate indicative of reflections of the plurality of micro-holograms in the first substrate; providing a third hologram-supporting substrate; and, illuminating the holographic pattern in the second substrate through the third substrate, thereby substantially replicating the plurality of micro-holograms in the first substrate in the third substrate.Type: ApplicationFiled: June 17, 2008Publication date: October 9, 2008Applicant: General Electric CompanyInventors: Brian Lee Lawrence, Marc Dubois, Pingfan Peter Wu, Joseph Lucian Smolenski, Xiaolei Shi, Eugene Pauling Boden
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Publication number: 20080158627Abstract: A method for storing holographic data, said method comprising: step (A) providing an optically transparent substrate comprising a polymer composition and a light absorbing chromophore, said polymer composition comprising a continuous phase and a dispersed phase, said dispersed phase being less than about 200 nm in size; and step (B) irradiating a volume element of the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to cause a phase change in at least a portion of the dispersed phase within the volume element of the substrate to produce within the irradiated volume element refractive index variations corresponding to the holographic interference pattern, thereby producing an optically readable datum corresponding to the volume element.Type: ApplicationFiled: September 18, 2007Publication date: July 3, 2008Inventors: Brian Lee Lawrence, Marc Dubois, Eugene Pauling Boden, William David Richards, Patrick Joseph McCloskey, Azar Alizadeh, Xiaolei Shi
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Publication number: 20080144146Abstract: Holographic data storage devices are presented. The holographic data storage device includes an optically transparent substrate, wherein the optically transparent substrate includes a photochemically active dye and a heat generating chromophore. Methods for making holographic data storage device are also presented.Type: ApplicationFiled: December 14, 2006Publication date: June 19, 2008Inventors: Eugene Pauling Boden, Brian Lee Lawrence, Xiaolei Shi
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Publication number: 20080144145Abstract: Methods for storing holographic data are presented. The method includes providing an optically transparent substrate comprising a thermally active photochemically active polymer composition, the polymer composition including a photochemically active dye and a heat generating chromophore, thermally activating at least a part of a volume element of the optically transparent substrate to increase a quantum efficiency of photochemical conversion of the photochemically active dye into a photo-product, within the at least a part of the volume element and converting at least some of the photochemically active dye to a photo-product, and producing concentration variations of the photo-product within the volume element of the optically transparent substrate, thereby producing an optically readable datum corresponding to the volume element.Type: ApplicationFiled: December 14, 2006Publication date: June 19, 2008Inventors: Eugene Pauling Boden, Brian Lee Lawrence, Xiaolei Shi
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Patent number: 7388695Abstract: A data storage device including: a plastic substrate having a plurality of volumes arranged in tracks along a plurality of vertically stacked, laterally extending layers therein; and, a plurality of micro-holograms each contained in a corresponding one of the volumes; herein, the presence or absence of a micro-hologram in each of the volumes is indicative of a corresponding portion of data stored.Type: GrantFiled: March 15, 2006Date of Patent: June 17, 2008Assignee: General Electric CompanyInventors: Brian Lee Lawrence, Marc Dubois, Pingfan Peter Wu, Joseph Lucian Smolenski, Xiaolei Shi, Eugene Pauling Boden
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Publication number: 20080085455Abstract: The present invention provides methods for storing holographic data and articles derived using these methods. The method includes providing an optically transparent substrate comprising a photochemically active dye and a sensitizing solvent. The method further includes irradiating the optically transparent substrate with a holographic interference pattern to form an optically readable datum and removing at least a portion of the sensitizing solvent from the optically transparent substrate to stabilize the optically readable datum.Type: ApplicationFiled: October 10, 2006Publication date: April 10, 2008Applicant: General Electric CompanyInventors: Michael Jeffrey McLaughlin, Christoph Georg Erben, Xiaolei Shi
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Publication number: 20080084592Abstract: A molded article is formed by molding a holographic recording material into a shape that is determined by the function of an molded article and a volume hologram is formed in the molded article. Alternatively, only a portion of the molded article is formed from the holographic recording medium, or a molded article is formed by molding a thermoplastic into a shape that is determined by the function of the article, and then this article is then coated, for example by dip-coating, with a holographic recording medium, and al volume hologram is formed in the coating of the molded article.Type: ApplicationFiled: October 9, 2006Publication date: April 10, 2008Applicant: General Electric CompanyInventors: Eugene Pauling Boden, Christoph Georg Erben, Brian Lee Lawrence, Kathryn Lynn Longley, Xiaolei Shi, Yana Z. Williams, Marc B. Wisnudel
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Publication number: 20080055686Abstract: Methods for holographic data storage are disclosed. The method includes providing an optically transparent substrate comprising a photochemically active dye and irradiating the optically transparent substrate with a holographic interference pattern and a photochromic conversion control illumination. The pattern has a first wavelength and an intensity both sufficient to convert, in the presence of the photochromic conversion control beam, within a volume element of the substrate, at least some of the photochemically active dye into a photo-product, and producing within the irradiated volume element concentration variations of the photo-product corresponding to the holographic interference pattern thereby producing an optically readable datum corresponding to the volume element. The photochromic conversion control illumination has a second wavelength and an intensity to control the photochromic conversion amplitude in the volume element.Type: ApplicationFiled: September 5, 2006Publication date: March 6, 2008Inventors: Christoph Georg Erben, Xiaolei Shi
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Publication number: 20070146835Abstract: A method of making a holographic data storage medium is provided. The method comprises: (a) providing an optically transparent substrate comprising at least one photochemically active dye; and (b) irradiating the optically transparent substrate at at least one wavelength at which the optically transparent substrate has an absorbance in a range from about 0.1 to 1, to produce a modified optically transparent substrate comprising at least one optically readable datum and at least one photo-product of the photochemically active dye. The at least one wavelength is in a range from about 300 nanometers to about 800 nanometers. The optically transparent substrate is at least 100 micrometers thick, and comprises the photochemically active dye in an amount corresponding to from about 0.1 to about 10 weight percent based on a total weight of the optically transparent substrate.Type: ApplicationFiled: October 27, 2005Publication date: June 28, 2007Applicant: General Electric CompanyInventors: Christoph Erben, Eugene Boden, Kathryn Longley, Brian Lawrence, Xiaolei Shi
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Publication number: 20070127329Abstract: The present invention provides a method for storing holographic data comprising providing an optically transparent substrate comprising a photochemically active dye and a photo-acid generator; irradiating the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to convert, within a volume element of the substrate, at least some of the photochemically active dye into a photo-product, producing within the irradiated volume element concentration variations of the photo-product corresponding to the holographic interference pattern, thereby producing a first optically readable datum corresponding to the volume element; and irradiating the optically transparent substrate at a second wavelength and intensity sufficient to activate the photo-acid generator to stabilize the optically readable datum.Type: ApplicationFiled: December 7, 2005Publication date: June 7, 2007Applicant: General Electric CompanyInventors: Christoph Erben, Eugene Boden, Xiaolei Shi
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Publication number: 20070097469Abstract: A method of making a holographic data storage medium is provided. The method comprises: (a) providing an optically transparent substrate comprising at least one photochemically active dye; and (b) irradiating the optically transparent substrate at least one wavelength at which the optically transparent substrate has an absorbance in a range from about 0.1 to 1, to produce a modified optically transparent substrate comprising at least one optically readable datum and at least one photo-product of the photochemically active dye. The at least one wavelength is in a range from about 300 nanometers to about 800 nanometers. The optically transparent substrate is at least 100 micrometers thick, and comprises the photochemically active dye in an amount corresponding to from about 0.1 to about 10 weight percent based on a total weight of the optically transparent substrate.Type: ApplicationFiled: December 11, 2006Publication date: May 3, 2007Applicant: General Electric CompanyInventors: Christoph Erben, Eugene Boden, Kathryn Longley, Brian Lawrence, Xiaolei Shi
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Publication number: 20060227398Abstract: A data storage device including: a plastic substrate having a plurality of volumes arranged in tracks along a plurality of vertically stacked, laterally extending layers therein; and, a plurality of micro-holograms each contained in a corresponding one of the volumes; herein, the presence or absence of a micro-hologram in each of the volumes is indicative of a corresponding portion of data stored.Type: ApplicationFiled: March 15, 2006Publication date: October 12, 2006Inventors: Brian Lawrence, Marc Dubois, Pingfan Wu, Joseph Smolenski, Xiaolei Shi, Eugene Boden
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Patent number: 7102802Abstract: The present invention provides a method for storing holographic data comprising providing an optically transparent substrate comprising a photochemically active dye; irradiating the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to convert, within a volume element of the substrate, at least some of the photochemically active dye into a photo-product, producing within the irradiated volume element concentration variations of the photo-product corresponding to the holographic interference pattern, thereby producing a first optically readable datum corresponding to the volume element; activating the optically transparent substrate to form an intramolecular hydrogen bond to a nitrone oxygen in residual photochemically active dye, to stabilize the optically readable datum.Type: GrantFiled: February 22, 2006Date of Patent: September 5, 2006Assignee: General Electric CompanyInventors: Christoph Georg Erben, Eugene Pauling Boden, Xiaolei Shi, Kathryn Lynn Longley
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Patent number: 7095767Abstract: A near field optical apparatus comprising a conductive sheet or plane having an aperture therein, with the conductive plane including at least one protrusion which extends into the aperture. The location, structure and configuration of the protrusion or protrusions can be controlled to provide desired near field localization of optical power output associated with the aperture. Preferably, the location, structure and configuration of the protrusion are tailored to maximize near field localization at generally the center of the aperture. The aperture preferably has a perimeter dimension which is substantially resonant with the output wavelength of the light source, or is otherwise able to support a standing wave of significant amplitude. The apparatus may be embodied in a vertical cavity surface emitting layer or VCSEL having enhanced nearfield brightness by providing a conductive layer on the laser emission facet, with a protrusion of the conductive layer extending into an aperture in the emission facet.Type: GrantFiled: August 29, 2000Date of Patent: August 22, 2006Assignee: Research Investment Network, Inc.Inventors: Robert L. Thornton, Xiaolei Shi
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Publication number: 20050221228Abstract: A mask layer for a high-density near-field optical storage system includes nonlinear optical material and nanoparticles embedded in the nonlinear optical material. The mask layer in combination with a data layer is useful for forming an optical disk. One technique for storing data in the optical disk includes using a gate beam to modify an index of refraction in a modified portion of the nonlinear optical material using a signal beam to provide nanoparticle resonance excitation of selected nanoparticles within the modified portion of the nonlinear optical material.Type: ApplicationFiled: March 30, 2004Publication date: October 6, 2005Inventors: Xiaolei Shi, Lambertus Hesselink
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Publication number: 20050030992Abstract: A near field optical apparatus comprising a conductive sheet or plane having an aperture therein with the conductive plane including at least one protrusion which extends into the aperture. The location, structure and configuration of the protrusion or protrusions can be controlled to provide desired near field localization of optical power output associated with the aperture. Preferably, the location, structure and configuration of the protrusion are tailored to maximize near field localization at generally the center of the aperture. The aperture preferably has a perimeter dimension which is substantially resonant with the output wavelength of the light source, or is otherwise able to support a standing wave of significant amplitude. The apparatus may be embodied in a vertical cavity surface emitting layer or VCSEL having enhanced nearfield brightness by providing a conductive layer on the laser emission facet, with, a protrusion of the conductive layer extending into an aperture in the emission facet.Type: ApplicationFiled: June 25, 2004Publication date: February 10, 2005Inventors: Robert Thornton, Xiaolei Shi
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Publication number: 20050030993Abstract: A near field optical apparatus comprising a conductive sheet or plane having an aperture therein with the conductive plane including at least one protrusion which extends into the aperture. The location, structure and configuration of the protrusion or protrusions can be controlled to provide desired near field localization of optical power output associated with the aperture. Preferably, the location, structure and configuration of the protrusion are tailored to maximize near field localization at generally the center of the aperture. The aperture preferably has a perimeter dimension which is substantially resonant with the output wavelength of the light source, or is otherwise able to support a standing wave of significant amplitude. The apparatus may be embodied in a vertical cavity surface emitting layer or VCSEL having enhanced nearfield brightness by providing a conductive layer on the laser emission facet, with, a protrusion of the conductive layer extending into an aperture in the emission facet.Type: ApplicationFiled: June 25, 2004Publication date: February 10, 2005Applicant: Research Investment Network, Inc.Inventors: Robert Thornton, Xiaolei Shi, Lambertus Hesselink
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Publication number: 20050031278Abstract: Near-field sub-wavelength C-apertures provide enhanced spatial resolution and power throughput by increasing the normalized resonant wavelength of the aperture. These improved apertures are characterized by the use of improved geometric proportions for C-apertures, filling the aperture with high-index material, designing aperture thickness to produce longitudinal transmission resonance, and/or tapering the aperture in the longitudinal direction to achieve impedance matching. Apertures according to the present invention may be used for many technological applications in various portions of the electromagnetic spectrum. Exemplary applications to high density optical data storage and optical particle trapping and manipulation are described.Type: ApplicationFiled: May 14, 2004Publication date: February 10, 2005Inventors: Xiaolei Shi, Lambertus Hesselink