Seagate Technology Incorporated

Saegate Technology LLC

James Gary Wessel

Mourad Benakli

Zoran Jandric

Raul Horacio Andruet

Karim Tatah

Werner Scholz

John Charles Duda

Declan Macken

Kirill A Rivkin

Jason Bryce Gadbois

Scott Michael Franzen

Chris Rea

Michael C Kautzky

Sarbeswar Sahoo

Neil Zuckerman

Ruoxi Yang

Yuhang Cheng

Michael Thomas Johnson

Huazhou Lou

Timothy William Stoebe

Dongming Liu

Vasudevan Ramaswamy

Xuan Zheng

Chen Wang

Chubing Peng

Mark Thomas Kief

Roger Lee Hipwell, Jr

Jianhua Xue

YongJun Zhao

Tae-Woo Lee

Jon Karsten Klarqvist

Lars Halvar Ahlen

Ning Shi

Kaizhong Gao

Huaqing Yin

Gary Joseph Kunkel

Hua Zhou

Bradley Jay Ver Meer

Ibro Tabakovic

Kevin Anthony McNeill

Pierre Asselin

Martin Liam McGarry

Helene Parwana Habibi

Dehua Han

Tyler Lenn Perry

Frank A McGinnity

Pablo G Levi

Radek Lopusnik

Michael Allen Seigler

Dimitar Velikov Dimitrov

Edward Charles Gage

Jon David Trantham

Bruce Douglas Buch

Tong Zhao

Tim Rausch

Mark Anthony Gubbins

Ming Sun

Mark William Covington

Martin Giles Blaber

Housan Dakroub

Bin Lu

John West Dykes

James Dillon Kiely

Mark Ostrowski

Scott Eugene Olson

Barmeshwar Vikramaditya

Narayanan Ramakrishnan

Eric Leroy Granstrom

Steven Carl Riemer

Joseph Michael Stephan

Jie Zou

Frank Edgar Stageberg

Christina L Hutchinson

Hui Brickner

David Chris Seets

Lien Lee

Nils Jan Gokemeijer

Dion Song

Alexandru Cazacu

Lina Cao

Lixin Jia

Michael Allen Siegler

David Christopher Seets

Charles Paul Henry

Chris Cote

Raul Horatio Andruet

Giovanni A Badini Confalonieri

Giovanni A Badini Confalioneri

Rachel Frakie

A method and apparatus provide for determining a temperature at a junction of a laser diode when the laser diode is operated in a lasing state that facilitates heat-assisted magnetic recording, comparing the junction temperature and an injection current supplied during the lasing state to stored combinations of junction temperature and injection current, and determining a likelihood of mode hopping occurring for the laser diode during the lasing state based on the comparison to stored combinations of junction temperature and injection current.

Thermal management of laser diode mode hopping for heat assisted media recording

The present invention is directed to the fabrication of head sliders for use in hard disk drives, and in particular the provision and usage of electrical bond pads on the slider surface structure to accommodate needs of the fabrication process as well as slider operation within a disk drive.

Slider with bond pad arrangements

A heat-assisted magnetic recording head includes a slider body, a laser, a submount, and a laser heater. The slider body is configured to contain components of the heat-assisted magnetic recording head. The laser is configured to emit electromagnetic radiation. The submount is configured to couple the laser to the slider body. The laser heater is configured to apply heat to the laser. The laser heater disposed on a surface of the slider body.

Heat-assisted magnetic recording head with a laser heater

A recording head includes one or more transducer elements, and an electrically insulative layer encasing the one or more transducer elements. The recording head also includes a substrate below the electrically insulative layer. The recording head further includes a heat sinking layer between the electrically insulative layer and the substrate.

Heat sinking layer between a substrate and encasing layers of a recording head

A heat-assisted magnetic recording head includes a near-field transducer, a heat sink, a diffuser, and a diffusion barrier. The near-field transducer is configured to produce a hot spot on a proximate magnetic disk. The heat sink is configured to draw heat away from the near-field transducer. The heat sink is disposed in a down-track direction relative to and coupled to the near-field transducer. The diffuser is configured to draw heat away from the heat sink. The diffuser is disposed in a down-track direction relative to the heat sink. The diffusion barrier includes a metal. The diffusion barrier is disposed between and coupled to the heat sink and the diffuser.

Heat-assisted magnetic recording head with a heat sink and a diffusion barrier

Method of processing a slider

A magnetic recording head includes a write pole including an end proximal to a media-facing surface of the magnetic recording head, a return pole disposed a distance from the write pole in a down-track dimension of the magnetic recording head, and a writer coil configured to produce a magnetic flux in the write pole. The writer coil includes a first segment and a second segment. The first segment is disposed proximal to the end of the write pole and between the write pole and the return pole. The second segment is electrically coupled to the first segment. A thickness of the second segment in the down-track dimension is greater than a thickness of the first segment in the down-track dimension.

Magnetic storage writer with non-uniform coil thickness

An apparatus comprises a slider configured to facilitate heat assisted magnetic recording and a submount affixed to the slider. A laser unit is affixed to the submount and comprises a laser operable in a non-lasing state and a lasing state. A heater is embedded in the laser unit or the submount. The heater is configured to generate preheat for heating the laser during the non-lasing state and to generate steering heat for heating the laser during the lasing state.

Heat-assisted magnetic recording device incorporating laser heater for improved laser stability

An apparatus comprises a slider configured to facilitate heat assisted magnetic recording. The slider comprises a plurality of bond pads including a first electrical bond pad, a second electrical bond pad, and a ground pad. A laser diode comprises an anode coupled to the first electrical bond pad and a cathode coupled to the second electrical bond pad. The laser diode is operable in a non-lasing state and a lasing state. A heater is coupled between the ground pad and at least one of the anode and cathode of the laser diode. The heater is configured to generate heat for heating the laser diode during the non-lasing state and the lasing state.

Heat-assisted magnetic recording device incorporating laser diode temperature control using common-mode voltage

Growing community of inventors

Savage, MN, United States of America

James Gary Wessel