GB2289974B - Optical pickup - Google Patents

Optical pickup

Info

Publication number
GB2289974B
GB2289974B GB9504692A GB9504692A GB2289974B GB 2289974 B GB2289974 B GB 2289974B GB 9504692 A GB9504692 A GB 9504692A GB 9504692 A GB9504692 A GB 9504692A GB 2289974 B GB2289974 B GB 2289974B
Authority
GB
United Kingdom
Prior art keywords
optical pickup
pickup
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 - Fee Related
Application number
GB9504692A
Other versions
GB9504692D0 (en
GB2289974A (en
Inventor
Kyo-Bang Chung
Jong-Kuk Mun
You-Shin Yi
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of GB9504692D0 publication Critical patent/GB9504692D0/en
Publication of GB2289974A publication Critical patent/GB2289974A/en
Application granted granted Critical
Publication of GB2289974B publication Critical patent/GB2289974B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
    • H01S5/0262—Photo-diodes, e.g. transceiver devices, bidirectional devices
    • H01S5/0264—Photo-diodes, e.g. transceiver devices, bidirectional devices for monitoring the laser-output
    • 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]
    • H01S5/18344—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] characterized by the mesa, e.g. dimensions or shape of the mesa
    • H01S5/1835—Non-circular mesa

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
GB9504692A 1994-05-31 1995-03-08 Optical pickup Expired - Fee Related GB2289974B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940012149A KR0147589B1 (en) 1994-05-31 1994-05-31 Optical pick up using vertical cavity surface emitting laser diode

Publications (3)

Publication Number Publication Date
GB9504692D0 GB9504692D0 (en) 1995-04-26
GB2289974A GB2289974A (en) 1995-12-06
GB2289974B true GB2289974B (en) 1998-07-08

Family

ID=19384336

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9504692A Expired - Fee Related GB2289974B (en) 1994-05-31 1995-03-08 Optical pickup

Country Status (5)

Country Link
JP (1) JPH07326063A (en)
KR (1) KR0147589B1 (en)
CN (1) CN1063567C (en)
DE (1) DE19508256A1 (en)
GB (1) GB2289974B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100259490B1 (en) * 1995-04-28 2000-06-15 윤종용 Vertical cavity surface emitting laser
KR100269710B1 (en) * 1996-01-23 2000-10-16 윤종용 Optical power device and optical pickup having the device
JPH1051067A (en) * 1996-04-29 1998-02-20 Motorola Inc Reflection type power monitoring system for vertical cavity surface emission laser
KR100189910B1 (en) * 1996-05-15 1999-06-01 윤종용 Optical pickup
KR100258927B1 (en) * 1996-10-29 2000-06-15 윤종용 Compatible optical pickup for multi-track scanning
US6154326A (en) * 1998-03-19 2000-11-28 Fuji Xerox Co., Ltd. Optical head, disk apparatus, method for manufacturing optical head, and optical element
US6687196B1 (en) 1998-05-08 2004-02-03 Fuji Xerox Co., Lt.D. Method and apparatus for implementing high density recording on a recording medium and a method of manufacturing same
JP3426962B2 (en) * 1998-05-19 2003-07-14 株式会社日立製作所 Optical head and optical information recording / reproducing device using the same
DE10055462C2 (en) * 2000-11-09 2003-07-31 Daimler Chrysler Ag Device for a vehicle lighting system and use of the device
DE102018124040A1 (en) * 2018-07-24 2020-01-30 Osram Opto Semiconductors Gmbh OPTOELECTRONIC SEMICONDUCTOR DEVICE WITH FIRST AND SECOND OPTOELECTRONIC ELEMENTS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233444A (en) * 1989-07-25 1993-08-03 Olympus Optical Co., Ltd. Focus error detecting apparatus
US5285466A (en) * 1992-05-20 1994-02-08 Wisconsin Alumni Research Foundation Feedback mechanism for vertical cavity surface emitting lasers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6446242A (en) * 1987-08-12 1989-02-20 Seiko Epson Corp Optical pickup
JP2596195B2 (en) * 1990-08-20 1997-04-02 日本電気株式会社 Vertical resonator type surface input / output photoelectric fusion device
JP3083834B2 (en) * 1990-08-21 2000-09-04 オリンパス光学工業株式会社 Optical pickup device
JP3350789B2 (en) * 1993-02-24 2002-11-25 株式会社日立製作所 Optical head and optical disk device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233444A (en) * 1989-07-25 1993-08-03 Olympus Optical Co., Ltd. Focus error detecting apparatus
US5285466A (en) * 1992-05-20 1994-02-08 Wisconsin Alumni Research Foundation Feedback mechanism for vertical cavity surface emitting lasers

Also Published As

Publication number Publication date
CN1115466A (en) 1996-01-24
KR950034124A (en) 1995-12-26
KR0147589B1 (en) 1998-10-15
CN1063567C (en) 2001-03-21
GB9504692D0 (en) 1995-04-26
JPH07326063A (en) 1995-12-12
DE19508256A1 (en) 1995-12-07
GB2289974A (en) 1995-12-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090308