JPS5693385A - Method for controlling wavelength of light emitted from diode laser - Google Patents

Method for controlling wavelength of light emitted from diode laser

Info

Publication number
JPS5693385A
JPS5693385A JP17107079A JP17107079A JPS5693385A JP S5693385 A JPS5693385 A JP S5693385A JP 17107079 A JP17107079 A JP 17107079A JP 17107079 A JP17107079 A JP 17107079A JP S5693385 A JPS5693385 A JP S5693385A
Authority
JP
Japan
Prior art keywords
diode
light
laser light
laser
wavelength
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.)
Granted
Application number
JP17107079A
Other languages
Japanese (ja)
Other versions
JPS5845195B2 (en
Inventor
Ichiro Tsurumi
Koichi Matsuura
Koji Shinohara
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.)
MATSURA KOUICHI
Fujitsu Ltd
Original Assignee
MATSURA KOUICHI
Fujitsu 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 MATSURA KOUICHI, Fujitsu Ltd filed Critical MATSURA KOUICHI
Priority to JP54171070A priority Critical patent/JPS5845195B2/en
Publication of JPS5693385A publication Critical patent/JPS5693385A/en
Publication of JPS5845195B2 publication Critical patent/JPS5845195B2/en
Expired 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
    • H01S5/0687—Stabilising the frequency of the laser

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To obtain a gas analyzer having excellent characteristics by splitting the laser light from the laser diode, applying the split light to a laser light wavelength sensor, feeding back the output to a diode current adjuster, and keeping the variable wavelength range at a constant level. CONSTITUTION:A light wavelength controlling device is composed of a laser diode A, the laser light wavelength sensor B, a control device C, and = the diode current adjuster D. The laser light from the diode A is applied to a beam splitter 25 and the majority of the light 26 is emitted as a light source for spectroscopic measurement of gas containing contaminated materials. A part of light 27 which is reflected from the splitter 25 is used for wavelgnth sensing, and applied to the laser light wavelength sensor B. The output thereof is fedback to the diode current adjuster D via the control diode C, and the wavelength of the diode A is stabilized. Thus, the spectroscopic analysis of the contaminating materials in the air can be performed instantaneously over the extensive area.
JP54171070A 1979-12-26 1979-12-26 Diode laser emission wavelength control method Expired JPS5845195B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54171070A JPS5845195B2 (en) 1979-12-26 1979-12-26 Diode laser emission wavelength control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54171070A JPS5845195B2 (en) 1979-12-26 1979-12-26 Diode laser emission wavelength control method

Publications (2)

Publication Number Publication Date
JPS5693385A true JPS5693385A (en) 1981-07-28
JPS5845195B2 JPS5845195B2 (en) 1983-10-07

Family

ID=15916470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54171070A Expired JPS5845195B2 (en) 1979-12-26 1979-12-26 Diode laser emission wavelength control method

Country Status (1)

Country Link
JP (1) JPS5845195B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016176807A (en) * 2015-03-20 2016-10-06 コニカミノルタ株式会社 Gas detector
JP2018022041A (en) * 2016-08-03 2018-02-08 日本電信電話株式会社 Wavelength swept light source

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838987A (en) * 1971-09-20 1973-06-08
JPS5362992A (en) * 1976-11-17 1978-06-05 Fujitsu Ltd Oscillation wavelength stabilization method of semiconductor laser
JPS5474386A (en) * 1977-10-26 1979-06-14 Post Office Controller

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838987A (en) * 1971-09-20 1973-06-08
JPS5362992A (en) * 1976-11-17 1978-06-05 Fujitsu Ltd Oscillation wavelength stabilization method of semiconductor laser
JPS5474386A (en) * 1977-10-26 1979-06-14 Post Office Controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016176807A (en) * 2015-03-20 2016-10-06 コニカミノルタ株式会社 Gas detector
JP2018022041A (en) * 2016-08-03 2018-02-08 日本電信電話株式会社 Wavelength swept light source

Also Published As

Publication number Publication date
JPS5845195B2 (en) 1983-10-07

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