JP4019615B2 - 光磁気素子、光磁気ヘッドおよび磁気ディスク装置 - Google Patents

光磁気素子、光磁気ヘッドおよび磁気ディスク装置 Download PDF

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Publication number
JP4019615B2
JP4019615B2 JP2000268296A JP2000268296A JP4019615B2 JP 4019615 B2 JP4019615 B2 JP 4019615B2 JP 2000268296 A JP2000268296 A JP 2000268296A JP 2000268296 A JP2000268296 A JP 2000268296A JP 4019615 B2 JP4019615 B2 JP 4019615B2
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JP
Japan
Prior art keywords
magnetic
magneto
gap
laser
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2000268296A
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English (en)
Japanese (ja)
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JP2001325756A (ja
JP2001325756A5 (enExample
Inventor
喜一 上柳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
Fujifilm Business Innovation Corp
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Filing date
Publication date
Application filed by Fuji Xerox Co Ltd, Fujifilm Business Innovation Corp filed Critical Fuji Xerox Co Ltd
Priority to JP2000268296A priority Critical patent/JP4019615B2/ja
Priority to US09/777,674 priority patent/US6876604B2/en
Publication of JP2001325756A publication Critical patent/JP2001325756A/ja
Priority to US11/038,539 priority patent/US7492673B2/en
Publication of JP2001325756A5 publication Critical patent/JP2001325756A5/ja
Application granted granted Critical
Publication of JP4019615B2 publication Critical patent/JP4019615B2/ja
Priority to US12/318,239 priority patent/US7894309B2/en
Priority to US12/318,240 priority patent/US7924659B2/en
Priority to US12/318,213 priority patent/US7663981B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/1058—Flying heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10545—Heads for reproducing using optical beam of radiation interacting directly with the magnetisation on the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
    • G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S2301/00—Functional characteristics
    • H01S2301/17—Semiconductor lasers comprising special layers
    • H01S2301/176—Specific passivation layers on surfaces other than the emission facet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
    • H01S5/0261—Non-optical elements, e.g. laser driver components, heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
    • H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
    • H01S5/18308—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement
    • H01S5/18338—Non-circular shape of the structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
    • H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
    • H01S5/18386—Details of the emission surface for influencing the near- or far-field, e.g. a grating on the surface
    • H01S5/18394—Apertures, e.g. defined by the shape of the upper electrode

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)
  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
  • Magnetic Heads (AREA)
JP2000268296A 2000-03-10 2000-09-05 光磁気素子、光磁気ヘッドおよび磁気ディスク装置 Expired - Fee Related JP4019615B2 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2000268296A JP4019615B2 (ja) 2000-03-10 2000-09-05 光磁気素子、光磁気ヘッドおよび磁気ディスク装置
US09/777,674 US6876604B2 (en) 2000-03-10 2001-02-07 Optically assisted magnetic recording device, optically assisted magnetic recording head and magnetic disk device
US11/038,539 US7492673B2 (en) 2000-03-10 2005-01-21 Optically assisted magnetic recording device with semiconductor laser, optically assisted magnetic recording head and magnetic disk device
US12/318,213 US7663981B2 (en) 2000-03-10 2008-12-23 Optically assisted magnetic recording device with semiconductor laser, optically assisted magnetic recording head and magnetic disk device
US12/318,239 US7894309B2 (en) 2000-03-10 2008-12-23 Optically assisted magnetic recording device with semiconductor laser, optically assisted magnetic recording head and magnetic disk device
US12/318,240 US7924659B2 (en) 2000-03-10 2008-12-23 Optically assisted magnetic recording device with semiconductor laser, optically assisted magnetic recording head and magnetic disk device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2000066854 2000-03-10
JP2000-66854 2000-03-10
JP2000268296A JP4019615B2 (ja) 2000-03-10 2000-09-05 光磁気素子、光磁気ヘッドおよび磁気ディスク装置

Publications (3)

Publication Number Publication Date
JP2001325756A JP2001325756A (ja) 2001-11-22
JP2001325756A5 JP2001325756A5 (enExample) 2006-12-21
JP4019615B2 true JP4019615B2 (ja) 2007-12-12

Family

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JP2000268296A Expired - Fee Related JP4019615B2 (ja) 2000-03-10 2000-09-05 光磁気素子、光磁気ヘッドおよび磁気ディスク装置

Country Status (2)

Country Link
US (5) US6876604B2 (enExample)
JP (1) JP4019615B2 (enExample)

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Also Published As

Publication number Publication date
US7663981B2 (en) 2010-02-16
US20010021211A1 (en) 2001-09-13
US7924659B2 (en) 2011-04-12
US20090129213A1 (en) 2009-05-21
JP2001325756A (ja) 2001-11-22
US7492673B2 (en) 2009-02-17
US20090122659A1 (en) 2009-05-14
US7894309B2 (en) 2011-02-22
US20050122849A1 (en) 2005-06-09
US6876604B2 (en) 2005-04-05
US20090129212A1 (en) 2009-05-21

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