HK1141630A1 - Laser control method and laser control circuit - Google Patents

Laser control method and laser control circuit

Info

Publication number
HK1141630A1
HK1141630A1 HK10107892.2A HK10107892A HK1141630A1 HK 1141630 A1 HK1141630 A1 HK 1141630A1 HK 10107892 A HK10107892 A HK 10107892A HK 1141630 A1 HK1141630 A1 HK 1141630A1
Authority
HK
Hong Kong
Prior art keywords
laser control
control circuit
control method
circuit
laser
Prior art date
Application number
HK10107892.2A
Other languages
English (en)
Original Assignee
Sony Disc & Digital Solutions
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 Sony Disc & Digital Solutions filed Critical Sony Disc & Digital Solutions
Publication of HK1141630A1 publication Critical patent/HK1141630A1/xx

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
    • 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
    • G11B7/12—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
    • H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
    • H01S5/042—Electrical excitation ; Circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Semiconductor Lasers (AREA)
  • Optical Head (AREA)
HK10107892.2A 2008-12-16 2010-08-18 Laser control method and laser control circuit HK1141630A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008320122A JP2010147105A (ja) 2008-12-16 2008-12-16 レーザ制御方法及びレーザ制御回路

Publications (1)

Publication Number Publication Date
HK1141630A1 true HK1141630A1 (en) 2010-11-12

Family

ID=42240471

Family Applications (1)

Application Number Title Priority Date Filing Date
HK10107892.2A HK1141630A1 (en) 2008-12-16 2010-08-18 Laser control method and laser control circuit

Country Status (5)

Country Link
US (1) US8094693B2 (zh)
JP (1) JP2010147105A (zh)
CN (1) CN101752785B (zh)
HK (1) HK1141630A1 (zh)
TW (1) TW201029007A (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5713746B2 (ja) * 2011-03-23 2015-05-07 キヤノン株式会社 画像形成装置
US9042207B2 (en) * 2013-05-09 2015-05-26 Seagate Technology Llc Magnetic recording laser diode control
CN103715604B (zh) * 2013-12-16 2017-01-04 江西华神智能物联技术有限公司 Dfb激光器的驱动系统及驱动方法
US20210119421A1 (en) * 2019-10-16 2021-04-22 Panasonic intellectual property Management co., Ltd Cold-start acceleration for wavelength-beam-combining laser resonators
JP7475220B2 (ja) * 2020-07-03 2024-04-26 住友重機械工業株式会社 レーザパワー計測装置
TWI801321B (zh) * 2022-09-28 2023-05-01 財團法人工業技術研究院 雷射自動補償調控裝置、應用其之雷射加工系統及雷射自動補償調控方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2840273B2 (ja) * 1989-02-03 1998-12-24 株式会社リコー 半導体レーザ制御装置
JPH0316191A (ja) * 1989-02-20 1991-01-24 Ricoh Co Ltd 半導体レーザ駆動方法
JP3318118B2 (ja) * 1994-05-18 2002-08-26 株式会社リコー 半導体レーザ制御装置
JP3405046B2 (ja) * 1996-02-22 2003-05-12 Ｋｄｄｉ株式会社 レーザ光発生装置
JPH1041569A (ja) * 1996-07-25 1998-02-13 Ricoh Co Ltd 半導体レーザ制御装置
US6950378B1 (en) * 1999-07-28 2005-09-27 Matsushita Electric Industrial Co., Ltd. Laser power control method and optical disk device
JP3988469B2 (ja) * 2002-01-25 2007-10-10 ソニー株式会社 半導体レーザ駆動回路
JP3980997B2 (ja) 2002-12-06 2007-09-26 株式会社ソニー・ディスクアンドデジタルソリューションズ 半導体レーザ駆動装置
US20050069002A1 (en) * 2003-09-25 2005-03-31 Hisashi Senga Laser driving device
JP2005293689A (ja) * 2004-03-31 2005-10-20 Sony Corp 記録装置、記録方法
JP4715198B2 (ja) * 2004-12-27 2011-07-06 ソニー株式会社 レーザ駆動装置

Also Published As

Publication number Publication date
TW201029007A (en) 2010-08-01
US20100150189A1 (en) 2010-06-17
JP2010147105A (ja) 2010-07-01
CN101752785A (zh) 2010-06-23
US8094693B2 (en) 2012-01-10
CN101752785B (zh) 2012-04-25

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20161216