JPS54157488A - Control unit for laser diode oscillation wave length - Google Patents

Control unit for laser diode oscillation wave length

Info

Publication number
JPS54157488A
JPS54157488A JP6568378A JP6568378A JPS54157488A JP S54157488 A JPS54157488 A JP S54157488A JP 6568378 A JP6568378 A JP 6568378A JP 6568378 A JP6568378 A JP 6568378A JP S54157488 A JPS54157488 A JP S54157488A
Authority
JP
Japan
Prior art keywords
laser
voltage
filter
oscillation wavelength
reflector
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
JP6568378A
Other languages
Japanese (ja)
Inventor
Tetsuya Kaneda
Kiyoshi Nawata
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP6568378A priority Critical patent/JPS54157488A/en
Publication of JPS54157488A publication Critical patent/JPS54157488A/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
    • 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
    • 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
    • H01S5/065—Mode locking; Mode suppression; Mode selection ; Self pulsating
    • 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
    • H01S5/06837—Stabilising otherwise than by an applied electric field or current, e.g. by controlling the temperature

Abstract

PURPOSE:To hold the oscillation wavelength of the laser beams at a constant level substantially by putting again part of the laser output beam to the laser and controll- ing the phase of feedback light. CONSTITUTION:With application of the voltage obtained by piling the micro-AC component vp onto DC voltage Vp to piezo-element 6, reflector 5 has minor vibra- tions in the direction of the optical axis. Thus, the oscillation wavelength of laser element 4 distant by distance d has a small and linear variation to d in the half- wave cycle. Voltage vp is set so that the fluctuation width may be within the linear range, and the transmission width of filter 10 is reduced sufficiently. Thus, the beams enter PIN diode 1 via Selfoc lens 9 and reflector 11. When the product of the AC component of the output of diode 1 and voltage vp is fed back to power source 12, the laser oscillation wavelength can be fixed to the central wavelength of filter 10. The more stability obtained the smaller the transmission width of the filter.
JP6568378A 1978-06-02 1978-06-02 Control unit for laser diode oscillation wave length Pending JPS54157488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6568378A JPS54157488A (en) 1978-06-02 1978-06-02 Control unit for laser diode oscillation wave length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6568378A JPS54157488A (en) 1978-06-02 1978-06-02 Control unit for laser diode oscillation wave length

Publications (1)

Publication Number Publication Date
JPS54157488A true JPS54157488A (en) 1979-12-12

Family

ID=13294045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6568378A Pending JPS54157488A (en) 1978-06-02 1978-06-02 Control unit for laser diode oscillation wave length

Country Status (1)

Country Link
JP (1) JPS54157488A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56150885A (en) * 1980-04-23 1981-11-21 Nippon Telegr & Teleph Corp <Ntt> Oscillating frequency stabilized semiconductor laser device
JPS57141617U (en) * 1981-03-03 1982-09-04
JPS57143887A (en) * 1981-02-27 1982-09-06 Fujitsu Ltd Semiconductor laser

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56150885A (en) * 1980-04-23 1981-11-21 Nippon Telegr & Teleph Corp <Ntt> Oscillating frequency stabilized semiconductor laser device
JPS6342866B2 (en) * 1980-04-23 1988-08-25 Nippon Telegraph & Telephone
JPS57143887A (en) * 1981-02-27 1982-09-06 Fujitsu Ltd Semiconductor laser
JPS6258556B2 (en) * 1981-02-27 1987-12-07 Fujitsu Ltd
JPS57141617U (en) * 1981-03-03 1982-09-04
JPS6330178Y2 (en) * 1981-03-03 1988-08-12

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