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WO2008087906A1 - Laser pulse generator and generation method - Google Patents

Laser pulse generator and generation method Download PDF

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Publication number
WO2008087906A1
WO2008087906A1 PCT/JP2008/050275 JP2008050275W WO2008087906A1 WO 2008087906 A1 WO2008087906 A1 WO 2008087906A1 JP 2008050275 W JP2008050275 W JP 2008050275W WO 2008087906 A1 WO2008087906 A1 WO 2008087906A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
laser medium
switch
oscillation
upper level
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.)
Ceased
Application number
PCT/JP2008/050275
Other languages
French (fr)
Japanese (ja)
Inventor
Tomohiro Imahoko
Tetsumi Sumiyoshi
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.)
Cyber Laser Inc
Original Assignee
Cyber Laser Inc
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 Cyber Laser Inc filed Critical Cyber Laser Inc
Publication of WO2008087906A1 publication Critical patent/WO2008087906A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/0602—Crystal lasers or glass lasers
    • H01S3/0604—Crystal lasers or glass lasers in the form of a plate or disc
    • 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
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/08054—Passive cavity elements acting on the polarization, e.g. a polarizer for branching or walk-off compensation
    • 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
    • H01S3/10038—Amplitude control
    • 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
    • H01S3/10038—Amplitude control
    • H01S3/10046—Pulse repetition rate control
    • 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
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
    • H01S3/109—Frequency multiplication, e.g. harmonic generation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)

Abstract

[PROBLEMS] To provide a stable pulse high repetition laser oscillator employing a laser medium of low amplification gain such as a thin planar shape. [MEANS FOR SOLVING PROBLEMS] A solid laser oscillator comprises at least a pair of laser resonators, a thin planar laser medium to which an active substance having an upper level life longer than the period of repetitive operation as a laser medium is added, a thin planar laser medium provided on at least one reflector in the laser resonator and a Q switch element provided in the resonator, a pumping source for pumping the laser medium optically, and a control section for driving the Q switch element. The control section starts oscillation with the Q switch element in on state and switches the Q switch to off during oscillation that allows the upper level density of active substance in the laser medium to remain, thus interrupting oscillation. Since the upper level pumping density is sustained such that a Q switch pulse can be oscillated when the Q switch is on, stable high repetition pulse oscillation can be achieved.
PCT/JP2008/050275 2007-01-16 2008-01-11 Laser pulse generator and generation method Ceased WO2008087906A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-007087 2007-01-16
JP2007007087A JP2008177226A (en) 2007-01-16 2007-01-16 Laser pulse generator and method thereof

Publications (1)

Publication Number Publication Date
WO2008087906A1 true WO2008087906A1 (en) 2008-07-24

Family

ID=39635910

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/050275 Ceased WO2008087906A1 (en) 2007-01-16 2008-01-11 Laser pulse generator and generation method

Country Status (4)

Country Link
JP (1) JP2008177226A (en)
KR (1) KR20090100393A (en)
CN (1) CN101584094A (en)
WO (1) WO2008087906A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2402847C2 (en) * 2008-08-06 2010-10-27 Государственное Научное Учреждение "Институт Физики Имени Б.И. Степанова Национальной Академии Наук Беларуси" Method of generating ultrashort pulses of high-power laser radiation and device for realising said method
KR101643746B1 (en) * 2015-06-12 2016-07-29 예림엔지니어링 주식회사 Raser pulse control method for skin treatment
US11121521B2 (en) * 2019-02-25 2021-09-14 Kla Corporation System and method for pumping laser sustained plasma with interlaced pulsed illumination sources

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10242551A (en) * 1997-02-28 1998-09-11 Nikon Corp Optical element and laser device using the same
JP2000517481A (en) * 1996-09-05 2000-12-26 ラウレル，フレドリク laser
US20020141457A1 (en) * 2001-03-30 2002-10-03 Frank Adams Method for operating Q-switched lasers with intracavity frequency conversion

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003080604A (en) * 2001-09-10 2003-03-19 Fuji Photo Film Co Ltd Laminate shaping apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000517481A (en) * 1996-09-05 2000-12-26 ラウレル，フレドリク laser
JPH10242551A (en) * 1997-02-28 1998-09-11 Nikon Corp Optical element and laser device using the same
US20020141457A1 (en) * 2001-03-30 2002-10-03 Frank Adams Method for operating Q-switched lasers with intracavity frequency conversion

Also Published As

Publication number Publication date
JP2008177226A (en) 2008-07-31
CN101584094A (en) 2009-11-18
KR20090100393A (en) 2009-09-23

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