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JPS6460841A - Magneto-optical recording and reproducing device - Google Patents

Magneto-optical recording and reproducing device

Info

Publication number
JPS6460841A
JPS6460841A JP21888687A JP21888687A JPS6460841A JP S6460841 A JPS6460841 A JP S6460841A JP 21888687 A JP21888687 A JP 21888687A JP 21888687 A JP21888687 A JP 21888687A JP S6460841 A JPS6460841 A JP S6460841A
Authority
JP
Japan
Prior art keywords
analyser
reflected light
light
incident
phase corrector
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.)
Pending
Application number
JP21888687A
Other languages
Japanese (ja)
Inventor
Nobuyoshi Ando
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP21888687A priority Critical patent/JPS6460841A/en
Publication of JPS6460841A publication Critical patent/JPS6460841A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing

Abstract

PURPOSE:To heighten the S/N of an information reproducing signal, by providing an analyser which transmits or reflects a beam of light corresponding to a polarizing state, and a phase corrector being arranged at the incident path of the analyser. CONSTITUTION:The analyser 27 which transmits or reflects reflected light from an information medium corresponding to the polarizing state, and the phase corrector 26 arranged at the incident optical path of the analyser 27 are provided. In other words, a phase difference between the P-polarized light and the S-polarized light of the reflected light generated at every passage of an optical component between the information medium and the analyser 27 is kept at zero or in the neighborhood of (pi) by the phase corrector 26. Thereby, it is possible to prevent the reflected light from being made into elliptically polarized light, and the reflected light can be made incident on the analyser 27 keeping a linearly polarized state. In such a way, it is possible to heighten the S/N of the information reproducing signal.
JP21888687A 1987-08-31 1987-08-31 Magneto-optical recording and reproducing device Pending JPS6460841A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21888687A JPS6460841A (en) 1987-08-31 1987-08-31 Magneto-optical recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21888687A JPS6460841A (en) 1987-08-31 1987-08-31 Magneto-optical recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS6460841A true JPS6460841A (en) 1989-03-07

Family

ID=16726850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21888687A Pending JPS6460841A (en) 1987-08-31 1987-08-31 Magneto-optical recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS6460841A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03120645A (en) * 1989-09-29 1991-05-22 Internatl Business Mach Corp <Ibm> Detector for detecting optical transition in magneto-optical storage device
JPH06230222A (en) * 1993-02-05 1994-08-19 Digital Stream:Kk Phase compensation plate and optical pickup for magneto-optical disk system using the phase compensation plate
EP0723264A2 (en) * 1995-01-19 1996-07-24 International Business Machines Corporation Multiple data surface magneto-optical data storage system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03120645A (en) * 1989-09-29 1991-05-22 Internatl Business Mach Corp <Ibm> Detector for detecting optical transition in magneto-optical storage device
JPH06230222A (en) * 1993-02-05 1994-08-19 Digital Stream:Kk Phase compensation plate and optical pickup for magneto-optical disk system using the phase compensation plate
EP0723264A2 (en) * 1995-01-19 1996-07-24 International Business Machines Corporation Multiple data surface magneto-optical data storage system
EP0723264A3 (en) * 1995-01-19 1997-06-25 Ibm Multiple data surface magneto-optical data storage system

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