JPS6457776A - Wavelength controller for laser - Google Patents

Wavelength controller for laser

Info

Publication number
JPS6457776A
JPS6457776A JP62214608A JP21460887A JPS6457776A JP S6457776 A JPS6457776 A JP S6457776A JP 62214608 A JP62214608 A JP 62214608A JP 21460887 A JP21460887 A JP 21460887A JP S6457776 A JPS6457776 A JP S6457776A
Authority
JP
Japan
Prior art keywords
wavelength
input
laser light
laser
etalon
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
JP62214608A
Other languages
Japanese (ja)
Inventor
Osamu Wakabayashi
Masahiko Kowaka
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP62214608A priority Critical patent/JPS6457776A/en
Publication of JPS6457776A publication Critical patent/JPS6457776A/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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/136—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling devices placed within the cavity
    • H01S3/137—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling devices placed within the cavity for stabilising of frequency

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Lasers (AREA)

Abstract

PURPOSE:To control to feed back an oscillation wavelength, and to accurately control the oscillation wavelength of a laser light by detecting the wavelength of the laser light by a spectroscope and a one-dimensional photodetector. CONSTITUTION:A rear mirror 2 and a front mirror 3 are arranged in an oscillator of a laser device 1. A laser light reflected by a half mirror 6 is input through a lens 7 to an optical fiber 8, and input through a lens 9 of the other end to a spectroscope 10. The output signal of a wavelength detector 104 is input to a controller 11, and the angles of two etalons 4, 5 are controlled on the basis of a central wavelength and a central wavelength optical intensity. Only the central wavelength component is detected by a one-dimensional photodetector. The first etalon 4 has a wide band wavelength selecting characteristic, and the second etalon 5 has a narrow band wavelength selecting characteristic.
JP62214608A 1987-08-28 1987-08-28 Wavelength controller for laser Pending JPS6457776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62214608A JPS6457776A (en) 1987-08-28 1987-08-28 Wavelength controller for laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62214608A JPS6457776A (en) 1987-08-28 1987-08-28 Wavelength controller for laser

Publications (1)

Publication Number Publication Date
JPS6457776A true JPS6457776A (en) 1989-03-06

Family

ID=16658533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62214608A Pending JPS6457776A (en) 1987-08-28 1987-08-28 Wavelength controller for laser

Country Status (1)

Country Link
JP (1) JPS6457776A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01115183A (en) * 1987-10-28 1989-05-08 Mitsubishi Electric Corp Laser wavelength stabilization and wavelength stabilized laser apparatus
JPH0243784A (en) * 1988-08-04 1990-02-14 Matsushita Electric Ind Co Ltd Wavelength variable laser device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01115183A (en) * 1987-10-28 1989-05-08 Mitsubishi Electric Corp Laser wavelength stabilization and wavelength stabilized laser apparatus
JPH0243784A (en) * 1988-08-04 1990-02-14 Matsushita Electric Ind Co Ltd Wavelength variable laser device

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