JPS647679A - Laser device - Google Patents

Laser device

Info

Publication number
JPS647679A
JPS647679A JP62163163A JP16316387A JPS647679A JP S647679 A JPS647679 A JP S647679A JP 62163163 A JP62163163 A JP 62163163A JP 16316387 A JP16316387 A JP 16316387A JP S647679 A JPS647679 A JP S647679A
Authority
JP
Japan
Prior art keywords
laser
optical
frequency
polarization
beams
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
JP62163163A
Other languages
Japanese (ja)
Inventor
Sakae Asada
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.)
Hoya Corp
Original Assignee
Hoya 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 Hoya Corp filed Critical Hoya Corp
Priority to JP62163163A priority Critical patent/JPS647679A/en
Publication of JPS647679A publication Critical patent/JPS647679A/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
    • H01S3/139—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
    • H01S3/1394—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length by using an active reference, e.g. second laser, klystron or other standard frequency source

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Lasers (AREA)

Abstract

PURPOSE:To obtain a laser device, in which the optical frequency difference of two polarization is varied and stabilized and which outputs stabilized two frequency cross polarization laser beams without having an effect on one laser beam frequency even when optical frequency difference is controlled and is proper to an optical heterodyne interference method, by respectively providing specific laser-beam generating means, optical means, controller, etc. CONSTITUTION:There are provided a first laser-beam generating means 30 projecting the laser beam 41 of linearly polarized light at stabilized optical frequency, a second laser-beam generating means 31 projecting the laser beams 43 of linearly polarized light having the plane of polarization orthogonal to laser beams 41 at optical frequency different from said optical frequency, optical means 34, 35 synchronizing laser beams 41, 43 so that the planes of polarization are crossed at right angles and separating one part 47 of the synthetic beams, a polarizer 36 converting the synthetic beams 47 into linearly polarized light 48 having one plane of polarization, a photodetector 37 detecting the intensity of the linearly polarized light 48, a means 38 generating a reference frequency signal, a controller 39 generating an output signal in response to frequency difference between the reference frequency signal and the electric signal of the photodetector 37, and a cavity length regulator 40 controlling the optical frequency of the second laser-beam generating means 31 in response to an output signal from the controller 39.
JP62163163A 1987-06-30 1987-06-30 Laser device Pending JPS647679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62163163A JPS647679A (en) 1987-06-30 1987-06-30 Laser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62163163A JPS647679A (en) 1987-06-30 1987-06-30 Laser device

Publications (1)

Publication Number Publication Date
JPS647679A true JPS647679A (en) 1989-01-11

Family

ID=15768431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62163163A Pending JPS647679A (en) 1987-06-30 1987-06-30 Laser device

Country Status (1)

Country Link
JP (1) JPS647679A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0666513A (en) * 1991-06-11 1994-03-08 Noboru Nakatani High-quenching-ratio orthogonal two frequency light source for heterodyne interferometer
FR2716728A1 (en) * 1994-02-28 1995-09-01 Ando Electric Light source with variable wavelength.
JP2021148634A (en) * 2020-03-19 2021-09-27 株式会社ミツトヨ Laser interference device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0666513A (en) * 1991-06-11 1994-03-08 Noboru Nakatani High-quenching-ratio orthogonal two frequency light source for heterodyne interferometer
FR2716728A1 (en) * 1994-02-28 1995-09-01 Ando Electric Light source with variable wavelength.
JP2021148634A (en) * 2020-03-19 2021-09-27 株式会社ミツトヨ Laser interference device

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