Seagate Technology Incorporated

Joachim Walter Ahner

David Marcus Tung

Stephen Keith McLaurin

Henry Luis Lott

Florin Zavaliche

Samuel Kah Hean Wong

Maissarath Nassirou

Martin Gerard Forrester

Travis William Grodt

Tong Zhao

Ian J Beresford

Robin Andrew Davies

Kaizhong Gao

David S Kuo

Thomas Young Chang

Dieter Klaus Weller

Ganping Ju

Thomas P Nolan

Timothy John Klemmer

Philip L Steiner

Mark Ian Lutwyche

Pin-Wei Huang

Stephen John Wrazien

S Keith McLaurin

Shan Hu

Daniel T Jennings

Xueshi Yang

Riyan Alex Mendonsa

Robert Earl Rottmayer

Kurt W Wierman

Ibro Tabakovic

Brian William Karr

Andreas Karl Roelofs

Mark David Bedillion

Aditya Jain

Weilu Hang Xu

Thomas Francis Ambrose

Thomas Larson Greenberg

Kuo-Hsing Hwang

Earl Chrzaszcz Johns

Robert D Hempstead

Jeremy Adam Thurn

Donald Everett Curtiss

Kai-Chieh Chang

Nisha Shukla

Jun Yu

Edward Stephen Skalko

Valeriu Rusu

Mitchell Tomio Inouye

Gabriel V Sapinoso

Clay Harrison Heberly

Andre Y L Liem

Stephen Christopher Kekoa Hager

Daniel J Gargas

Described are optical recording media for recording data in voxels, the optical recording media including a plurality of data recording regions for recording the voxels, the data recording regions separated by buffer regions having optical properties such that illumination from a reader that enters one of the data recording regions remains preferentially confined in said one of the data recording regions until being scattered by interaction with one or more of the voxels. Also described are methods for reading the described optical recording media, which include separating the light received from illuminating the voxels based on wavelength, polarization, or other optical properties.

Multidimensional optical storage media having light confinement layers and reading methodology therefor

A non-metallic media substrate includes a disc-shaped substrate body having at least one media storage surface on a face thereof. The substrate body has a center opening having an inner diameter and an outer diameter surface, and the substrate body has a thickness. The substrate further includes an annular groove at the outer diameter of the media substrate, the annular groove having chamfered edges and an internal concavity extending toward the inner diameter.

Method of laser cutting a hard disk drive substrate for an edge profile alignable to a registration support

An apparatus includes a beam splitter and a plurality of mirrors. The beam splitter is positioned to receive a laser beam from a source and split the received laser beam to a first plurality of split laser beams and a second plurality of split laser beams. The plurality of mirrors is configured to direct the first plurality of split laser beams and further configured to direct the second plurality of split laser beams. The first plurality of split laser beams is directed by the plurality of mirrors is configured to cut a glass substrate. The second plurality of split laser beams is directed by the plurality of mirrors is configured to shape the glass substrate.

Laser beam cutting/shaping a glass substrate

A method includes projecting energy onto an annular edge of a glass substrate. The annular edge includes a first roughness. The first roughness is reduced to a second roughness with the energy. The energy reduces the first roughness without changing a roundness of the annular edge of the glass substrate.

Edge polishing a glass substrate after cutting

A method includes cutting an outer diameter into a glass substrate. An inner diameter within the outer diameter is also cut into the glass substrate. A first region inside the outer diameter and a second region inside the inner diameter are heated. The second region inside the inner diameter is cooled, wherein the cooling causes the second region to detach from the first region.

Separation of glass shapes using engineered induced thermal gradients after process cutting

A system includes a light source, a detector, and a processor. The light source is configured to emit light onto a target. The detector is configured to receive light interaction between the emitted light and the target. The processor is configured to receive the light interaction between the emitted light and the target and further configured to process the light interaction to determine an edge profile associated with the target.

Edge profile detection

Provided herein is an apparatus including a three dimensional crystalline structure including a number of storage locations. The storage locations are arranged in three dimensions within the crystalline structure. A light source is configured to focus a first light with a first energy on one of the storage locations in order to alter a characteristic of the storage location. The light source is further able to focus a second light with a second light energy on the storage location without altering the characteristic. A detector is provided to detect the second light energy.

3D storage cells

Provided herein are apparatus and methods for inspecting articles for features using interference in light reflected from the articles. The interference may be used to detect, distinguish, and/or map features of articles, which features may include, but are not limited to, surface defects. In at least one embodiment, an apparatus and method includes conveying parallel light along a primary axis through a telecentric lens and a light-splitting device, respectively; illuminating a majority of a surface of an article with the parallel light; conveying reflected light from the surface of the article along the primary axis back through the light-splitting device and the telecentric lens, respectively; and recording interference resulting from a combination of light comprising at least the reflected light from the surface of the article.

Apparatus and methods using interference in light reflected from articles

Provided herein is an apparatus that includes a first and second laser source. The first and second laser sources are each operable to cut a substrate and are each independently movable with respect to one another. Further, the first and second laser sources are included within a multitude of laser sources that are arranged in a circular array.

Laser cutting array with multiple laser source arrangement

An apparatus for detecting surface features is disclosed. The apparatus may include a plurality of strands configured to contain light and further configured to transmit light from a light source to a surface of an article. The apparatus may also include a detector configured to receive light reflected from the surface of the article via the plurality of strands, wherein the detector is further configured to detect features associated with the article.

Feature detection with light transmitting medium

Provided herein is an apparatus, including an excitation arm including excitation optics; a collection arm including collection optics, wherein the excitation arm and the collection arm are geometrically off-axis from one another for independent control of the excitation optics or the collection optics; and a full-surface spectroscopic analyzer to analyze a thin-film over an article from Raman-scattered light collected by the collection optics.

Raman apparatus and methods

Provided herein is an apparatus including an imaging lens assembly configured to collect reflected light from a surface of an article; an image sensor configured to receive reflected light from the imaging lens assembly, wherein the imaging lens assembly and the image sensor are each arranged at different angles for focusing on substantially an entire surface of an article; and a processing means configured to process signals from the image sensor corresponding to polarized reflected light and subsequently generate one or more features maps.

Features maps of articles with polarized light

The system includes a data storage medium comprising cells, an excitation circuit, and an emitter. The cells arranged in a three dimensional space. The excitation circuit excites each cell independently. Exciting a cell changes an optical property of the cell. The emitter emits a first beam onto a first cell during a first excitation period to orient electrical charges within the first cell to a first oriented value and intensity of electric field to a first intensity value. The emitter emits a second beam onto a second cell during a second excitation period to orient electrical charges within the second cell to a second oriented value and intensity of electric field to a second intensity value. The first and second cells maintain the first and the second oriented values and the first and second intensity values after the first and second excitation periods are over, respectively.

Electric field storage device

Provided herein is an apparatus, comprising a first photon emitter configured to emit photons into an article from a circumferential edge of the article, and a photon detector array configured to detect photons scattered from features of the article.

Imaging a transparent article

A system includes a data storage medium and a shockwave generator. The data storage medium includes cells and a plurality of layers. Each cell is configured to store information therein. At least two cells are arranged in a horizontal plane within a same layer of the plurality of layers of the data storage medium and at least two cells are arranged in a vertical plane in different layers of the plurality of layers of the data storage medium. The shockwave generator is configured to generate a shockwave signal that travels through a layer of the plurality of layers of the data storage medium. A target cell within the layer stores information responsive to a beam emitted from an emitter targeting the target cell as the shockwave signal is passing through the target cell. The target cell maintains the information after the shockwave signal exits through the target cell.

Three dimensional electric field data storage device utilizing shockwaves and a light source

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Pittsburgh, PA, United States of America

Joachim Walter Ahner