JPS571279A - Q switch laser whose output is stabilized - Google Patents

Q switch laser whose output is stabilized

Info

Publication number
JPS571279A
JPS571279A JP7447180A JP7447180A JPS571279A JP S571279 A JPS571279 A JP S571279A JP 7447180 A JP7447180 A JP 7447180A JP 7447180 A JP7447180 A JP 7447180A JP S571279 A JPS571279 A JP S571279A
Authority
JP
Japan
Prior art keywords
output
switch
stabilized
loosing
given
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
JP7447180A
Other languages
Japanese (ja)
Other versions
JPS6366074B2 (en
Inventor
Shunji Kishida
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7447180A priority Critical patent/JPS571279A/en
Publication of JPS571279A publication Critical patent/JPS571279A/en
Publication of JPS6366074B2 publication Critical patent/JPS6366074B2/ja
Granted 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

Abstract

PURPOSE:To obtain optical pulses having excellent reproducibility without loosing output power, by incorporating an output stabilizing means into a Q switch means in the form of an additional circuit. CONSTITUTION:A solid state laser rod 1 is excited by a lamp 3. An ultrasonic Q switch element 4 is inserted in a resonator comprising mirrors 2 and 2'. Electric power from a high frequency power source 9 is modified and given to a high speed switch 10. Part of the laser output is detected 5 and suitably amplified 6. The low frequency component is removed by a capacitor 7, and the resulting AC signal is applied to the modifier 8. The operating point is set by the voltage of a DC bias circuit 11. The resonator loss which is proportional to the laser output is given by the modified signal obtained in this way, and the output is stabilized by the negative feedback. In this simple constitution, the slackening oscillation under the preliminary oscillating state is suppressed, the optical output immediately before the Q switch and inversion distribution become constant, and the reproducibility of the pulse output and the time of emission can be enhanced without loosing the output power.
JP7447180A 1980-06-03 1980-06-03 Q switch laser whose output is stabilized Granted JPS571279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7447180A JPS571279A (en) 1980-06-03 1980-06-03 Q switch laser whose output is stabilized

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7447180A JPS571279A (en) 1980-06-03 1980-06-03 Q switch laser whose output is stabilized

Publications (2)

Publication Number Publication Date
JPS571279A true JPS571279A (en) 1982-01-06
JPS6366074B2 JPS6366074B2 (en) 1988-12-19

Family

ID=13548194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7447180A Granted JPS571279A (en) 1980-06-03 1980-06-03 Q switch laser whose output is stabilized

Country Status (1)

Country Link
JP (1) JPS571279A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126692A (en) * 1983-01-10 1984-07-21 Nec Corp Q-switching laser device
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
CN105231992A (en) * 2014-07-03 2016-01-13 佳能株式会社 Object information acquiring apparatus and laser apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS524758U (en) * 1975-06-24 1977-01-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS524758U (en) * 1975-06-24 1977-01-13

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126692A (en) * 1983-01-10 1984-07-21 Nec Corp Q-switching laser device
JPH0454999B2 (en) * 1983-01-10 1992-09-01 Nippon Electric Co
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
CN105231992A (en) * 2014-07-03 2016-01-13 佳能株式会社 Object information acquiring apparatus and laser apparatus
JP2016015440A (en) * 2014-07-03 2016-01-28 キヤノン株式会社 Subject information acquisition device and laser device

Also Published As

Publication number Publication date
JPS6366074B2 (en) 1988-12-19

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