JP3834485B2 - レーザ駆動装置とそれを用いた光ディスク装置、及びそのレーザ制御方法 - Google Patents

レーザ駆動装置とそれを用いた光ディスク装置、及びそのレーザ制御方法 Download PDF

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Publication number
JP3834485B2
JP3834485B2 JP2001158105A JP2001158105A JP3834485B2 JP 3834485 B2 JP3834485 B2 JP 3834485B2 JP 2001158105 A JP2001158105 A JP 2001158105A JP 2001158105 A JP2001158105 A JP 2001158105A JP 3834485 B2 JP3834485 B2 JP 3834485B2
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JP
Japan
Prior art keywords
frequency
laser
current
driving device
laser driving
Prior art date
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Expired - Fee Related
Application number
JP2001158105A
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English (en)
Japanese (ja)
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JP2002352461A (ja
JP2002352461A5 (https=
Inventor
信 二瓶
敏光 賀来
昭広 浅田
隆司 星野
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.)
Hitachi Ltd
Hitachi LG Data Storage Inc
Original Assignee
Hitachi Ltd
Hitachi LG Data Storage Inc
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Filing date
Publication date
Application filed by Hitachi Ltd, Hitachi LG Data Storage Inc filed Critical Hitachi Ltd
Priority to JP2001158105A priority Critical patent/JP3834485B2/ja
Priority to US09/943,860 priority patent/US6810050B2/en
Publication of JP2002352461A publication Critical patent/JP2002352461A/ja
Priority to US10/937,908 priority patent/US7499478B2/en
Publication of JP2002352461A5 publication Critical patent/JP2002352461A5/ja
Application granted granted Critical
Publication of JP3834485B2 publication Critical patent/JP3834485B2/ja
Anticipated expiration legal-status Critical
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    • 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
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1263—Power control during transducing, e.g. by monitoring
    • 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
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
    • H01S5/0687—Stabilising the frequency of the laser

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
JP2001158105A 2001-05-28 2001-05-28 レーザ駆動装置とそれを用いた光ディスク装置、及びそのレーザ制御方法 Expired - Fee Related JP3834485B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2001158105A JP3834485B2 (ja) 2001-05-28 2001-05-28 レーザ駆動装置とそれを用いた光ディスク装置、及びそのレーザ制御方法
US09/943,860 US6810050B2 (en) 2001-05-28 2001-08-30 Laser driver, optical disk apparatus using the same, and laser control method
US10/937,908 US7499478B2 (en) 2001-05-28 2004-09-09 Laser driver, optical disk apparatus using the same, and laser control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001158105A JP3834485B2 (ja) 2001-05-28 2001-05-28 レーザ駆動装置とそれを用いた光ディスク装置、及びそのレーザ制御方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2005277053A Division JP3834578B2 (ja) 2005-09-26 2005-09-26 レーザ駆動装置とそれを用いた光ディスク装置、及びそのレーザ制御方法

Publications (3)

Publication Number Publication Date
JP2002352461A JP2002352461A (ja) 2002-12-06
JP2002352461A5 JP2002352461A5 (https=) 2005-07-07
JP3834485B2 true JP3834485B2 (ja) 2006-10-18

Family

ID=19001876

Family Applications (1)

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JP2001158105A Expired - Fee Related JP3834485B2 (ja) 2001-05-28 2001-05-28 レーザ駆動装置とそれを用いた光ディスク装置、及びそのレーザ制御方法

Country Status (2)

Country Link
US (2) US6810050B2 (https=)
JP (1) JP3834485B2 (https=)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002158395A (ja) * 2000-11-17 2002-05-31 Sony Corp 半導体レーザのレーザパワー制御方法及び制御装置並びに光磁気記録媒体の記録再生方法及び記録再生装置並びに光記録媒体の記録再生方法及び記録再生装置
JP3834485B2 (ja) * 2001-05-28 2006-10-18 株式会社日立製作所 レーザ駆動装置とそれを用いた光ディスク装置、及びそのレーザ制御方法
JP2003091823A (ja) * 2001-09-20 2003-03-28 Teac Corp 光ディスク装置
JP3561259B2 (ja) * 2002-01-09 2004-09-02 株式会社東芝 情報記憶媒体、情報記録装置、情報再生装置、情報記録方法、及び情報再生方法
DE10250982A1 (de) * 2002-10-29 2004-05-19 Infineon Technologies Ag Lasertreiber und digitale Steuerung eines Lasertreibers
JP4197452B2 (ja) 2003-04-21 2008-12-17 パイオニア株式会社 情報記録装置及び情報記録方法
FR2872359B1 (fr) * 2004-06-23 2006-09-08 Alcatel Sa Emetteur optique micro-onde avec laser auto pulsant
TW200630337A (en) 2004-10-14 2006-09-01 Euro Celtique Sa Piperidinyl compounds and the use thereof
JP2006221765A (ja) * 2005-02-14 2006-08-24 Pioneer Electronic Corp 情報記録再生装置、及び情報再生方法
JPWO2007034783A1 (ja) * 2005-09-22 2009-03-26 パナソニック株式会社 半導体レーザ駆動装置、光ヘッド装置および光情報記録再生装置
US8791264B2 (en) 2006-04-13 2014-07-29 Purdue Pharma L.P. Benzenesulfonamide compounds and their use as blockers of calcium channels
US7983124B2 (en) 2006-06-20 2011-07-19 Pioneer Corporation Optical recording/reproducing method, system, and program
JP2011100514A (ja) * 2009-11-06 2011-05-19 Hitachi-Lg Data Storage Inc 光ディスク装置
US12218481B2 (en) * 2021-03-24 2025-02-04 Apple Inc. Laser safety circuit providing frequency-based average current monitoring

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US4329664A (en) * 1980-06-09 1982-05-11 Ali Javan Generation of stable frequency radiation at an optical frequency
US4819242A (en) * 1985-11-20 1989-04-04 Hitachi, Ltd. Semiconductor laser driver circuit
JPH0325732A (ja) 1989-06-23 1991-02-04 Ricoh Co Ltd 半導体レーザのノイズ低減回路
JPH03113736A (ja) * 1989-09-22 1991-05-15 Olympus Optical Co Ltd 半導体レーザの駆動装置
US5127015A (en) * 1990-04-17 1992-06-30 Sharp Kabushiki Kaisha Driving circuit of a semiconductor laser
JPH0773497A (ja) 1993-09-02 1995-03-17 Toshiba Corp 光ディスク装置
US5579328A (en) * 1995-08-10 1996-11-26 Northern Telecom Limited Digital control of laser diode power levels
JP3780650B2 (ja) 1997-08-05 2006-05-31 ソニー株式会社 半導体レーザの平均光出力の設定方法および半導体レーザの高周波電流の重畳条件の設定方法
JP3708767B2 (ja) * 1999-06-25 2005-10-19 株式会社東芝 半導体集積回路とこれを含む光ピックアップ光学系ユニット及び光ピックアップ装置
US6895385B1 (en) * 2000-06-02 2005-05-17 Open Ratings Method and system for ascribing a reputation to an entity as a rater of other entities
JP2002230814A (ja) 2001-01-30 2002-08-16 Yamaha Corp 光ディスク記録再生装置
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Also Published As

Publication number Publication date
US20050030989A1 (en) 2005-02-10
JP2002352461A (ja) 2002-12-06
US7499478B2 (en) 2009-03-03
US20020176461A1 (en) 2002-11-28
US6810050B2 (en) 2004-10-26

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