JPS549956A - Device for improving signal noise ratio at time of transmission of signal utilizing laser beam or recording and * or reproduction thereof - Google Patents

Device for improving signal noise ratio at time of transmission of signal utilizing laser beam or recording and * or reproduction thereof

Info

Publication number
JPS549956A
JPS549956A JP5949078A JP5949078A JPS549956A JP S549956 A JPS549956 A JP S549956A JP 5949078 A JP5949078 A JP 5949078A JP 5949078 A JP5949078 A JP 5949078A JP S549956 A JPS549956 A JP S549956A
Authority
JP
Japan
Prior art keywords
reproduction
recording
transmission
laser beam
noise ratio
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
JP5949078A
Other languages
Japanese (ja)
Inventor
Berugaa Kurausu
Borushiebuitsutsu Manfureeto
Buaigeruto Burukuharuto
Ruudouitsuhi Tsuorun Kaaru
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of JPS549956A publication Critical patent/JPS549956A/en
Pending legal-status Critical Current

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
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/08018—Mode suppression
    • H01S3/08022—Longitudinal modes
    • H01S3/08031—Single-mode emission
    • H01S3/08036—Single-mode emission using intracavity dispersive, polarising or birefringent elements
JP5949078A 1977-05-20 1978-05-18 Device for improving signal noise ratio at time of transmission of signal utilizing laser beam or recording and * or reproduction thereof Pending JPS549956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772722832 DE2722832A1 (en) 1977-05-20 1977-05-20 Signal transmission, recording and playback system - uses laser beam and interference distance improvement by inserting Fabry-Perot standard in beam path (NL 22.11.78)

Publications (1)

Publication Number Publication Date
JPS549956A true JPS549956A (en) 1979-01-25

Family

ID=6009470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5949078A Pending JPS549956A (en) 1977-05-20 1978-05-18 Device for improving signal noise ratio at time of transmission of signal utilizing laser beam or recording and * or reproduction thereof

Country Status (3)

Country Link
JP (1) JPS549956A (en)
DE (1) DE2722832A1 (en)
NL (1) NL7805469A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157124A (en) * 1981-03-24 1982-09-28 Yutaka Ono Optical rod fabry-perot thermometer
JPS61131579A (en) * 1984-11-30 1986-06-19 Photo Composing Mach Mfg Co Ltd Laser output system
WO1988000767A1 (en) * 1986-06-09 1988-01-28 Kabushiki Kaisha Komatsu Seisakusho Multi-mode narrow-band oscillation excimer laser
WO1988007276A1 (en) * 1987-03-19 1988-09-22 Kabushiki Kaisha Komatsu Seisakusho Device for controlling wavelength of laser beam
WO1989003132A1 (en) * 1987-09-26 1989-04-06 Mitsubishi Denki Kabushiki Kaisha Laser device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157124A (en) * 1981-03-24 1982-09-28 Yutaka Ono Optical rod fabry-perot thermometer
JPH0432336B2 (en) * 1981-03-24 1992-05-29
JPS61131579A (en) * 1984-11-30 1986-06-19 Photo Composing Mach Mfg Co Ltd Laser output system
WO1988000767A1 (en) * 1986-06-09 1988-01-28 Kabushiki Kaisha Komatsu Seisakusho Multi-mode narrow-band oscillation excimer laser
WO1988007276A1 (en) * 1987-03-19 1988-09-22 Kabushiki Kaisha Komatsu Seisakusho Device for controlling wavelength of laser beam
WO1989003132A1 (en) * 1987-09-26 1989-04-06 Mitsubishi Denki Kabushiki Kaisha Laser device
EP0336972A1 (en) * 1987-09-26 1989-10-18 Mitsubishi Denki Kabushiki Kaisha Laser device
EP0336972B1 (en) * 1987-09-26 1994-04-27 Mitsubishi Denki Kabushiki Kaisha Laser device

Also Published As

Publication number Publication date
NL7805469A (en) 1978-11-22
DE2722832A1 (en) 1978-11-30

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