DE69521269D1 - Verfahren und Vorrichtung zur Regelung der Leistung einer Mehrstrahlhalbleiterlaservorrichtung - Google Patents
Verfahren und Vorrichtung zur Regelung der Leistung einer MehrstrahlhalbleiterlaservorrichtungInfo
- Publication number
- DE69521269D1 DE69521269D1 DE69521269T DE69521269T DE69521269D1 DE 69521269 D1 DE69521269 D1 DE 69521269D1 DE 69521269 T DE69521269 T DE 69521269T DE 69521269 T DE69521269 T DE 69521269T DE 69521269 D1 DE69521269 D1 DE 69521269D1
- Authority
- DE
- Germany
- Prior art keywords
- controlling
- power
- semiconductor laser
- beam semiconductor
- laser device
- 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
Links
Classifications
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
-
- 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
-
- 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
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
-
- 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
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
-
- 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
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
- Semiconductor Lasers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6283410A JPH08147745A (ja) | 1994-11-17 | 1994-11-17 | マルチビームレーザパワー制御方法及びマルチビーム光学的記録再生装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69521269D1 true DE69521269D1 (de) | 2001-07-19 |
DE69521269T2 DE69521269T2 (de) | 2002-01-10 |
Family
ID=17665173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69521269T Expired - Fee Related DE69521269T2 (de) | 1994-11-17 | 1995-11-16 | Verfahren und Vorrichtung zur Regelung der Leistung einer Mehrstrahlhalbleiterlaservorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US5671209A (de) |
EP (1) | EP0713214B1 (de) |
JP (1) | JPH08147745A (de) |
KR (1) | KR0167635B1 (de) |
DE (1) | DE69521269T2 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100205425B1 (ko) * | 1995-11-21 | 1999-07-01 | 구자홍 | 광 디스크의 기록재생장치 및 방법 |
US5894467A (en) * | 1997-02-19 | 1999-04-13 | Hewlett-Packard Company | Multiple VSEL assembly for read/write and tracking applications in optical disks |
WO2000042515A1 (fr) * | 1999-01-12 | 2000-07-20 | Fujitsu Limited | Dispositif de gestion des acces et procede de gestion des acces a un support d'enregistrement |
DE19942551C2 (de) * | 1999-09-07 | 2003-05-08 | Heidelberger Druckmasch Ag | Verfahren und Schaltungsanordnung zur Ansteuerung von Laserdioden |
JP3859416B2 (ja) * | 2000-02-29 | 2006-12-20 | 株式会社日立製作所 | 対物レンズ、これを用いた光ヘッドおよび光ディスク装置 |
JP3591468B2 (ja) * | 2001-02-26 | 2004-11-17 | ティアック株式会社 | 光ディスク装置 |
JP2003077146A (ja) * | 2001-08-31 | 2003-03-14 | Sony Corp | ディスク記録装置とディスク記録方法 |
JP3632641B2 (ja) * | 2001-09-07 | 2005-03-23 | ティアック株式会社 | 光ディスク装置 |
AUPS204302A0 (en) * | 2002-04-30 | 2002-06-06 | Cmc Power Systems Limited | A connection assembly |
DE10306894A1 (de) * | 2003-02-18 | 2004-08-26 | Deutsche Thomson-Brandt Gmbh | Verfahren und Anordnung zum Kompensieren von Abtaststörungen optischer Aufzeichnungsträger |
TW200739566A (en) * | 2006-03-30 | 2007-10-16 | Koninkl Philips Electronics Nv | A method and apparatus for controlling lasers power for a plurality of laser beams |
CN101415990A (zh) * | 2006-04-07 | 2009-04-22 | 皇家飞利浦电子股份有限公司 | 扫描激光照明设备 |
JP2009176379A (ja) * | 2008-01-28 | 2009-08-06 | Toshiba Corp | 光ディスク装置および発光素子の駆動方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919252A (ja) * | 1982-07-21 | 1984-01-31 | Ricoh Co Ltd | 半導体レ−ザ−アレイ出力制御方法 |
JP2542577B2 (ja) * | 1986-02-26 | 1996-10-09 | 株式会社東芝 | 情報記録再生装置 |
JPH07111782B2 (ja) * | 1986-08-13 | 1995-11-29 | ソニー株式会社 | 光デイスクの記録再生装置 |
JPS63198387A (ja) * | 1987-02-13 | 1988-08-17 | Hitachi Ltd | 半導体レ−ザアレイ装置 |
JPH03102656A (ja) * | 1989-09-14 | 1991-04-30 | Asaka Co Ltd | マルチビーム光ディスク装置 |
JP2923331B2 (ja) * | 1990-06-12 | 1999-07-26 | オリンパス光学工業株式会社 | 光記録媒体及びその再生装置 |
JPH04153926A (ja) * | 1990-10-15 | 1992-05-27 | Nec Corp | 光ディスク装置 |
JP3066118B2 (ja) * | 1991-07-19 | 2000-07-17 | パイオニア株式会社 | 光検出装置 |
US5295125A (en) * | 1992-02-03 | 1994-03-15 | Hitachi, Ltd. | Optical head device for recording/reproduction for recording medium using plural light spots |
-
1994
- 1994-11-17 JP JP6283410A patent/JPH08147745A/ja active Pending
-
1995
- 1995-11-15 US US08/559,432 patent/US5671209A/en not_active Expired - Fee Related
- 1995-11-16 EP EP95118055A patent/EP0713214B1/de not_active Expired - Lifetime
- 1995-11-16 DE DE69521269T patent/DE69521269T2/de not_active Expired - Fee Related
- 1995-11-17 KR KR1019950043057A patent/KR0167635B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0713214A2 (de) | 1996-05-22 |
KR960019876A (ko) | 1996-06-17 |
JPH08147745A (ja) | 1996-06-07 |
EP0713214B1 (de) | 2001-06-13 |
DE69521269T2 (de) | 2002-01-10 |
US5671209A (en) | 1997-09-23 |
KR0167635B1 (ko) | 1999-02-01 |
EP0713214A3 (de) | 1996-09-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |