Seagate Technology Incorporated

Mark Anthony Gubbins

Marcus Benedict Mooney

Michael James Hardy

Aidan Dominic Goggin

Swaraj Basu

Prim Gangmei

Muhammad Asif Bashir

Robert William Lamberton

Andres David Barbosa Neira

Beverley R McConnell

Choon How Gan

Roberto Fernandez Garcia

Roger Lee Hipwell, Jr

Martin Giles Blaber

Paula Frances McElhinney

Fadi El Hallak

Scott Eugene Olson

James Joseph Touchton

Peter Kevin McGeehin

Robert Edward Weinstein

Michael Allen Seigler

Tong Zhao

Jianhua Xue

Weibin Chen

Simon Bance

John Charles Duda

Erik Jon Hutchinson

Mark Ostrowski

Raul Horacio Andruet

Vivek Krishnamurthy

Martin Liam McGarry

Helene Parwana Habibi

Alexandru Cazacu

Angela Moore

Vijayaharan Arumungakannunadar Venugopal

Shengzhou Liao

Michael C Kautzky

Declan Macken

Wei Tian

Bin Lu

Florin Zavaliche

John David Westwood

Reyad Mehfuz

Karim Tatah

John Wolf

Neil Zuckerman

Christopher Neil Harvey

Eric Roger Meloche

Kelly Elizabeth Hamilton

Francis A McGinnity

Alan Biggar Johnston

Kelly Elizabeth Callan

Chen Wang

Yi-Kuei Ryan Wu

Aji Baby

Brendan Lafferty

Lixin Jia

Bryn John Howells

Martin Peter McCurry

Anil Kumar Puri

Reshma Anamari Mohandas

Kaizhong Gao

James Gary Wessel

Dieter Klaus Weller

Yuhang Cheng

Mark Thomas Kief

Dadi Setiadi

Todd Michael Lammers

Richard C A Pitwon

Ibro Tabakovic

Ruoxi Yang

Christina L Hutchinson

John Bernard McGurk

Adam Andrzej Lapicki

William J O'Kane

Alex Wong

David Christopher Seets

Debra Ann McNeill

Alexandru Cazacy

Alex Yu Loong Wong

Bredan Lafferty

Alin Mihai Fecioru

Venancio Calero Vila

Evangelos Atmatzakis

Deirdre Merron

Marcus Weigand

Sharon May McClean

Praphaphan Wipatawit

Muhammed Bilal Janjua

Sharon Hammant

A heat-assisted magnetic recording head includes a laser, a near-field transducer, a primary waveguide, a secondary waveguide, and a photodiode. The laser is configured to emit electromagnetic radiation. The near-field transducer is configured to focus and emit an optical near-field. The primary waveguide configured to receive the electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The secondary waveguide configured to receive a portion of the electromagnetic radiation from the primary waveguide. The photodiode configured to receive the portion of the electromagnetic radiation from the secondary waveguide and emit a signal that represents a magnitude of the electromagnetic radiation that the laser emits.

Heat-assisted magnetic recording head with an integrated photodiode

A recording head comprises a write pole extending to an air-bearing surface. A near-field transducer is positioned proximate a first side of the write pole in a down-track direction. A heatsink structure is proximate the near-field transducer and positioned between the near-field transducer and the write pole. The heatsink structure extends beyond the near-field transducer in a cross-track direction and extends in a direction normal to the air-bearing surface.

Heatsink structures for heat-assisted magnetic recording heads

A heat-assisted magnetic recording head comprises a near-field transducer (NFT). The NFT comprises a thermally-stabilized plasmonic alloy, wherein the thermally-stabilized plasmonic alloy comprises a plasmonic metal and at least one alloying metal.

Heat-assisted magnetic recording head near-field transducer with a thermally-stabilized plasmonic alloy

Exemplary methods and apparatus may provide optical gates and optical switches using such optical gates. Each optical gate may include a semiconductor optical amplifier that is placed in a substrate. The semiconductor optical amplifier may be coupled to input and output couplers to receive and selectively output optical signals into and out of the substrate.

Optical switches

A near-field transducer or heat sink is formed via a first process. The near-field transducer or heat sink is transfer-printed to a read/write head via a second process.

Transfer-printed near-field transducer and heat sink

The presently disclosed technology teaches integrating disc drive electronics into a transducer head. Decreased electrical transit times and data processing times can be achieved by placing the electronics on or within the transducer head because electrical connections may be made physically shorter than in conventional systems. The electronics may include one or more of a control system circuit, a write driver, and/or a data buffer. The control system circuit generates a modified clock signal that has a fixed relation to phase and frequency of a bit-detected reference signal that corresponds to positions of patterned bits on the disc. The write driver writes outgoing data bits received from an external connection to off-head electronics directly to the writer synchronized with the modified clock signal. The data buffer stores and converts digital data bits sent from the off-head electronics to an analog signal that is synchronized with the modified clock signal.

On head microelectronics for write synchronization

An apparatus includes a slider configured for heat-assisted magnetic recording. The slider includes an input coupler configured to receive light excited by a light source. The slider includes a waveguide core tapering along a light propagation direction from a first cross-sectional width to a second cross-sectional width, the waveguide configured to provide a surface plasmon-enhanced near-field radiation pattern proximate an output end in response to the received light. One or more cladding layers surround the waveguide core. At least one strip of plasmonic material is disposed between the waveguide core and at least one of the one or more cladding layers.

Waveguide having plasmonic strips for heat-assisted magnetic recording

A disk drive has a recording head slidably coupled to a rail and in magnetic communication with a disk surface. The recording head has an optical power interface and an optical data interface. An optical transceiver is fixably mounted proximate an end of the rail and optically coupled to the optical power interface and/or the optical data interface of the recording head. The coupling between the optical transceiver and the interfaces facilitates writing data to the disk surface and/or reading data from the disk surface via the recording head.

Sliding disk drive recording head with wireless power and data interfaces

A recording head includes a substrate, a read transducer, a waveguide core, and a near-field transducer at an end of the waveguide core proximate a media-facing surface. The recording head includes a magnetic write pole and coil. A laser diode unit with one or more non-self-supporting layers of crystalline material region is transfer printed between layers of the recording head.

Recording head with transfer-printed laser diode unit formed of non-self-supporting layers

A device including a near field transducer, the near field transducer including a near field transducer, the near field transducer comprising a copper (Cu) alloy of the formula CuX, where z ranges from 0.001 to 0.9 and X is selected from aluminum (Al), cobalt (Co), chromium (Cr), erbium (Er), iron (Fe), gold (Au), hafnium (Hf), iridium (Ir), molybdenum (Mo), nickel (Ni), palladium (Pd), platinum (Pt), rhenium (Re), rhodium (Rh), ruthenium (Ru), silicon (Si), tin (Sn), tantalum (Ta), tellurium (Te), titanium (Ti), tungsten (W), yttrium (Y), zinc (Zn), zirconium (Zr), or combinations thereof.

Near field transducers including copper based alloys

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Donegal, Ireland

Mark Anthony Gubbins