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1. WO2022030408 - LASER OSCILLATOR, LASER PROCESSING MACHINE, AND STIMULATED RAMAN SCATTERING INHIBITION METHOD

Publication Number WO/2022/030408
Publication Date 10.02.2022
International Application No. PCT/JP2021/028453
International Filing Date 30.07.2021
IPC
B23K 26/00 2014.1
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
B23K 26/0622 2014.1
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
062by direct control of the laser beam
0622by shaping pulses
B23K 26/38 2014.1
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
36Removing material
38by boring or cutting
H01S 3/00 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
H01S 3/067 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, e.g. laser amplifiers
067Fibre lasers
H01S 3/10 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
CPC
B23K 26/00
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
B23K 26/0622
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
062by direct control of the laser beam
0622by shaping pulses
B23K 26/38
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
36Removing material
38by boring or cutting
H01S 3/00
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
H01S 3/067
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
063Waveguide lasers, ; i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
067Fibre lasers
H01S 3/10
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES 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
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
Applicants
  • 株式会社アマダ AMADA CO.,LTD. [JP]/[JP]
Inventors
  • 小林 哲也 KOBAYASHI Tetsuya
  • 有本 陽亮 ARIMOTO Yosuke
  • 巻口 和也 MAKIGUCHI Kazuya
  • 岸本 博紀 KISHIMOTO Hiroki
  • 向井 進之介 MUKAI Shinnosuke
Agents
  • 三好 秀和 MIYOSHI Hidekazu
  • 高橋 俊一 TAKAHASHI Shunichi
  • 伊藤 正和 ITO Masakazu
  • 高松 俊雄 TAKAMATSU Toshio
Priority Data
2020-13476907.08.2020JP
2020-16746502.10.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) LASER OSCILLATOR, LASER PROCESSING MACHINE, AND STIMULATED RAMAN SCATTERING INHIBITION METHOD
(FR) OSCILLATEUR LASER, MACHINE DE TRAITEMENT LASER ET PROCÉDÉ D'INHIBITION DE DIFFUSION RAMAN STIMULÉE
(JA) レーザ発振器、レーザ加工機、及び誘導ラマン散乱抑制方法
Abstract
(EN) A pulse generating unit (11) generates a driving voltage signal comprising a pulse signal on the basis of an output command signal comprising a pulse signal. A laser oscillation module (12) oscillates a laser beam by carrying out a pulse oscillating operation on the basis of the driving voltage signal. When the output command signal has a voltage command value corresponding to a laser output greater than a predetermined laser output during a high period, the pulse generating unit (11) modulates the voltage value of the driving voltage signal during the high period in a pulsed manner such that a high state in which the voltage value is maintained and a low state in which the voltage value is lowered by a predetermined voltage value without being lowered to the voltage value of the low period of the driving voltage signal are repeated alternately, for a preset time from the rise time of the high period of the driving voltage signal.
(FR) Une unité de génération d'impulsion (11) génère un signal de tension d'attaque comprenant un signal d'impulsion sur la base d'un signal de commande de sortie comprenant un signal d'impulsion. Un module d'oscillation laser (12) fait osciller un faisceau laser par mise en œuvre d'une oscillation d'impulsion sur la base du signal de tension d'attaque. Lorsque le signal de commande de sortie présente une valeur de commande de tension correspondant à une sortie laser supérieure à une sortie laser préétablie pendant une période haute, l'unité de génération d'impulsion (11) module la valeur de tension du signal de tension d'attaque pendant la période haute de manière pulsée de sorte qu'un état haut dans lequel la valeur de tension est maintenue et qu'un état bas dans lequel la valeur de tension est abaissée d'une valeur de tension préétablie sans être abaissé à la valeur de tension de la période basse du signal de tension d'attaque soient répétés en alternance, pendant un laps de temps prédéfini à partir du temps de montée de la période haute du signal de tension d'attaque.
(JA) パルス生成部(11)は、パルス信号よりなる出力指令信号に基づいて、パルス信号よりなる駆動電圧信号を生成する。レーザ発振モジュール(12)は、駆動電圧信号に基づいてパルス発振動作を行ってレーザビームを発振する。パルス生成部(11)は、出力指令信号が、ハイの期間に所定のレーザ出力を超えるレーザ出力に対応する電圧指令値を有するとき、駆動電圧信号のハイの期間の電圧値を、駆動電圧信号のハイの期間の立ち上がり時刻から予め設定した時間だけ、電圧値を維持するハイの状態と電圧値を駆動電圧信号のローの期間の電圧値まで低下させることなく所定の電圧値だけ低下させるローの状態とを交互に繰り返すようにパルス状に変調する。
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