DE69801468T2 - Optische Abtastvorrichtung mit Halbleiterlaser und zugehöriges Verfahren - Google Patents

Optische Abtastvorrichtung mit Halbleiterlaser und zugehöriges Verfahren

Info

Publication number
DE69801468T2
DE69801468T2 DE69801468T DE69801468T DE69801468T2 DE 69801468 T2 DE69801468 T2 DE 69801468T2 DE 69801468 T DE69801468 T DE 69801468T DE 69801468 T DE69801468 T DE 69801468T DE 69801468 T2 DE69801468 T2 DE 69801468T2
Authority
DE
Germany
Prior art keywords
semiconductor laser
scanning device
optical scanning
associated method
optical
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 - Lifetime
Application number
DE69801468T
Other languages
English (en)
Other versions
DE69801468D1 (de
Inventor
Minoru Ohyama
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Publication of DE69801468D1 publication Critical patent/DE69801468D1/de
Application granted granted Critical
Publication of DE69801468T2 publication Critical patent/DE69801468T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • 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
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/065—Mode locking; Mode suppression; Mode selection ; Self pulsating
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • 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
    • H01S5/14—External cavity lasers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
DE69801468T 1997-06-26 1998-06-17 Optische Abtastvorrichtung mit Halbleiterlaser und zugehöriges Verfahren Expired - Lifetime DE69801468T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9185900A JPH1116188A (ja) 1997-06-26 1997-06-26 半導体レーザ及び光ピックアップ

Publications (2)

Publication Number Publication Date
DE69801468D1 DE69801468D1 (de) 2001-10-04
DE69801468T2 true DE69801468T2 (de) 2002-04-18

Family

ID=16178853

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69801468T Expired - Lifetime DE69801468T2 (de) 1997-06-26 1998-06-17 Optische Abtastvorrichtung mit Halbleiterlaser und zugehöriges Verfahren

Country Status (5)

Country Link
US (1) US6122304A (de)
EP (1) EP0887898B1 (de)
JP (1) JPH1116188A (de)
CN (1) CN1106705C (de)
DE (1) DE69801468T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7035196B2 (en) * 2000-03-14 2006-04-25 Matsushita Electric Industrial Co., Ltd. Optical head device and optical recording and reproducing apparatus having lasers aligned in a tangential direction
JP4604440B2 (ja) 2002-02-22 2011-01-05 日本電気株式会社 チャネルエッチ型薄膜トランジスタ
JP2005064387A (ja) * 2003-08-19 2005-03-10 Sony Corp レーザ光源、および光ピックアップ
WO2007080925A1 (ja) * 2006-01-12 2007-07-19 Matsushita Electric Industrial Co., Ltd. 光ピックアップ装置および当該光ピックアップ装置を備えた情報処理装置
US9007723B1 (en) 2013-12-13 2015-04-14 HGST Netherlands B.V. Microwave-assisted magnetic recording (MAMR) head employing advanced current control to establish a magnetic resonance state
US8908481B1 (en) 2014-01-27 2014-12-09 HGST Netherlands B.V. Thermally-assisted magnetic recording head that suppresses effects of mode hopping

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5611623A (en) * 1979-07-07 1981-02-05 Hitachi Maxell Ltd Magnetic recording medium and its manufacture
JPS5698723A (en) * 1980-01-09 1981-08-08 Nec Corp Optical information reading method
JPS5921054A (ja) * 1982-07-27 1984-02-02 Toshiba Corp 外囲器
US4528670A (en) * 1983-02-25 1985-07-09 At&T Bell Laboratories Short coupled cavity laser
JPS59210541A (ja) * 1983-05-13 1984-11-29 Hitachi Ltd 光学式情報記録再生装置
JPS61941A (ja) * 1984-06-13 1986-01-06 Matsushita Electric Ind Co Ltd 半導体レ−ザ光ピツクアツプ装置
JPS61216148A (ja) * 1985-03-22 1986-09-25 Canon Inc 光情報記録再生装置
JPS6254991A (ja) * 1985-09-04 1987-03-10 Hitachi Ltd 半導体レ−ザ装置
JPH0589465A (ja) * 1991-06-28 1993-04-09 Hitachi Ltd 光学式情報記録再生方法およびその装置
JPH05275785A (ja) * 1992-03-28 1993-10-22 Sony Corp レーザ光発生光学装置
JPH0676344A (ja) * 1992-08-26 1994-03-18 Sony Corp 光ディスク・ピックアップ
JP3257382B2 (ja) * 1995-11-30 2002-02-18 住友電気工業株式会社 半導体レ−ザモジュ−ル

Also Published As

Publication number Publication date
EP0887898B1 (de) 2001-08-29
DE69801468D1 (de) 2001-10-04
CN1106705C (zh) 2003-04-23
EP0887898A1 (de) 1998-12-30
US6122304A (en) 2000-09-19
CN1204174A (zh) 1999-01-06
JPH1116188A (ja) 1999-01-22

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