JPS6481376A - Laser oscillator - Google Patents

Laser oscillator

Info

Publication number
JPS6481376A
JPS6481376A JP23919087A JP23919087A JPS6481376A JP S6481376 A JPS6481376 A JP S6481376A JP 23919087 A JP23919087 A JP 23919087A JP 23919087 A JP23919087 A JP 23919087A JP S6481376 A JPS6481376 A JP S6481376A
Authority
JP
Japan
Prior art keywords
optical axis
laser
ultrasonic wave
switch
plane
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
JP23919087A
Other languages
Japanese (ja)
Other versions
JPH0626273B2 (en
Inventor
Takahiro Nagashima
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP23919087A priority Critical patent/JPH0626273B2/en
Publication of JPS6481376A publication Critical patent/JPS6481376A/en
Publication of JPH0626273B2 publication Critical patent/JPH0626273B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1123—Q-switching
    • H01S3/117—Q-switching using intracavity acousto-optic devices

Abstract

PURPOSE:To incorporate an isotropy in the output characteristic of an oscillation laser in a direction perpendicular to the optical axis of the laser by providing an ultrasonic wave Q switch so as to have the optical axis of a solid laser rod in its ultrasonic wave propagating direction in a plane parallel to the short axis of the ellipse of a condenser and to cross the optical axis at an angle for satisfying Bragg's condition with the optical axis. CONSTITUTION:An ultrasonic wave switch 7 is so disposed in a plane (plane Z-Y) parallel to the short axis of the ellipse of a condenser 6 including a laser optical axis Z as shown in Fig. 3 in one direction perpendicular to the propagation of its ultrasonic wave as to cross at an angle theta for satisfying Bragg's condition with the laser optical axis Z. The optically excited state of an actual YAG rod 4 has directional characteristic as shown in Fig. 2, and it is different from the directional characteristic of an output of the switch 7 mounted as above, the directional characteristic of the laser output of repetition pulse becomes maximum at the outputs in the directions X, Y at the position of the optical axis Z as shown in Fig. 4, and the attenuation trends of the outputs due to the deflection from the optical axis Z becomes substantially equal in the directions X and Y as shown by broken line circles.
JP23919087A 1987-09-24 1987-09-24 Laser oscillator Expired - Lifetime JPH0626273B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23919087A JPH0626273B2 (en) 1987-09-24 1987-09-24 Laser oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23919087A JPH0626273B2 (en) 1987-09-24 1987-09-24 Laser oscillator

Publications (2)

Publication Number Publication Date
JPS6481376A true JPS6481376A (en) 1989-03-27
JPH0626273B2 JPH0626273B2 (en) 1994-04-06

Family

ID=17041054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23919087A Expired - Lifetime JPH0626273B2 (en) 1987-09-24 1987-09-24 Laser oscillator

Country Status (1)

Country Link
JP (1) JPH0626273B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6879605B2 (en) 2000-07-24 2005-04-12 Laserfront Technologies, Inc. Method and apparatus for performing pattern defect repair using Q-switched mode-locked pulse laser
KR100681939B1 (en) * 2001-05-18 2007-02-12 알로이즈 우벤 Cooling device for a wind turbine generator
US9337609B2 (en) 2012-05-09 2016-05-10 Mitsubishi Electric Corporation Passively Q-switched element and passively Q-switched laser device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6879605B2 (en) 2000-07-24 2005-04-12 Laserfront Technologies, Inc. Method and apparatus for performing pattern defect repair using Q-switched mode-locked pulse laser
KR100681939B1 (en) * 2001-05-18 2007-02-12 알로이즈 우벤 Cooling device for a wind turbine generator
US9337609B2 (en) 2012-05-09 2016-05-10 Mitsubishi Electric Corporation Passively Q-switched element and passively Q-switched laser device

Also Published As

Publication number Publication date
JPH0626273B2 (en) 1994-04-06

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