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1. (WO2019028064) FIBER LASER APPARATUS AND METHOD FOR PROCESSING WORKPIECE
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Pub. No.:
WO/2019/028064
International Application No.:
PCT/US2018/044671
Publication Date:
07.02.2019
International Filing Date:
31.07.2018
IPC:
H01S 3/10
(2006.01) ,
H01L 21/268
(2006.01)
H
ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
S
DEVICES USING STIMULATED EMISSION
3
Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves
10
Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H
ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
21
Processes or apparatus specially adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
02
Manufacture or treatment of semiconductor devices or of parts thereof
04
the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer, carrier concentration layer
18
the devices having semiconductor bodies comprising elements of the fourth group of the Periodic System or A
III
B
V
compounds with or without impurities, e.g. doping materials
26
Bombardment with wave or particle radiation
263
with high-energy radiation
268
using electromagnetic radiation, e.g. laser radiation
Applicants:
IPG PHOTONICS CORPORATION
[US/US]; 50 Old Webster Road Oxford, MA 01540, US
Inventors:
LIMANOV, Alexander
; US
VON DADELSZEN, Michael
; US
CORDINGLEY, James
; US
SCHOENLY, Joshua
; US
Agent:
KATESHOV, Yuri
; US
Priority Data:
62/539,183
31.07.2017
US
62/549,254
23.08.2017
US
Title
(EN)
FIBER LASER APPARATUS AND METHOD FOR PROCESSING WORKPIECE
(FR)
APPAREIL LASER À FIBRE ET PROCÉDÉ DE TRAITEMENT DE PIÈCE
Abstract:
(EN)
A surface treating method and apparatus include operating a quasi-continuous wave fiber laser and pre-scan shaping the laser beam such that an instantaneous spot beam has predetermined geometrical dimensions, intensity profile, and power; operating a scanner at an optimal angular velocity and angular range to divide the pre-scan beam into a plurality of sub-beams deflected towards the surface being processed; guiding the sub-beams through a post-scan optical assembly to provide the spot beam with predetermined geometrical dimensions, power, and angular velocity and range, which are selected such that the instantaneous spot beam is dragged in a scan direction over a desired length at a desired scan velocity, which allow the treated surface to be exposed for a predetermined exposure duration and have a predetermined fluence distribution providing the treated surface with a quality comparable to that of the surface processed by an excimer laser or a burst-mode fiber laser.
(FR)
L'invention concerne un procédé de fonctionnement d'un appareil de traitement de surface qui comprend l'exploitation d'un laser à fibre à onde quasi-continue et la mise en forme pré-balayage du faisceau laser de manière qu'un faisceau ponctuel instantané présente des dimensions géométriques, un profil d'intensité et une puissance prédéterminés ; l'exploitation d'un dispositif de balayage à une vitesse angulaire et dans une plage angulaire optimales pour diviser le faisceau pré-balayage en une pluralité de sous-faisceaux déviés vers la surface soumise au traitement ; le guidage des sous-faisceaux à travers un ensemble optique post-balayage pour conférer au faisceau ponctuel des dimensions géométriques, une puissance, et une vitesse et une plage angulaires prédéterminées, qui sont sélectionnées de manière que le faisceau ponctuel instantané soit entraîné dans une direction de balayage sur une longueur souhaitée à une vitesse de balayage souhaitée, qui permettent à la surface traitée d'être exposée pendant une durée d'exposition prédéterminée et d'avoir une distribution de fluence prédéterminée conférant à la surface traitée une qualité comparable à celle de la surface traitée par un laser à excimère ou un laser à fibre en mode rafale.
Designated States:
AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)