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1. (WO2019063662) LASER SYSTEM AND METHOD FOR GENERATING A TOP-HAT APPROXIMATED BEAM PROFILE
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Pub. No.: WO/2019/063662 International Application No.: PCT/EP2018/076208
Publication Date: 04.04.2019 International Filing Date: 27.09.2018
IPC:
G02B 27/09 (2006.01) ,B23K 26/00 (2014.01) ,G02B 6/42 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
09
Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26
Working by laser beam, e.g. welding, cutting, boring
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24
Coupling light guides
42
Coupling light guides with opto-electronic elements
Applicants:
TRUMPF LASER GMBH [DE/DE]; Aichhalder Strasse 39 78713 Schramberg, DE
Inventors:
KILLI, Alexander; DE
STOLZENBURG, Christian; DE
BAUER, Dominik; DE
BUDNICKI, Aleksander; DE
FLAMM, Daniel; DE
JANSEN, Florian; DE
Agent:
KOHLER SCHMID MÖBUS PATENTANWÄLTE PARTG MBB; Gropiusplatz 10 70563 Stuttgart, DE
Priority Data:
10 2017 217 145.627.09.2017DE
Title (EN) LASER SYSTEM AND METHOD FOR GENERATING A TOP-HAT APPROXIMATED BEAM PROFILE
(FR) SYSTÈME LASER ET PROCÉDÉ DE GÉNÉRATION D’UN PROFIL DE FAISCEAU APPROPRIXIMATIVEMENT EN FORME DE CHAPEAU
(DE) LASERSYSTEM UND VERFAHREN ZUR ERZEUGUNG EINES TOP-HAT-ANGENÄHERTEN STRAHLPROFILS
Abstract:
(EN) The claimed laser system (1) comprises a beam homogenizer (5) for homogenizing an essentially Gaussian beam profile of a laser beam (3) to form a homogenized beam profile. Homogenization occurs using an optical element (7) of the beam homogenizer (5) which is configured as a refractive, reflective and/or diffractive optical element. The laser system (1) also comprises a multi-mode fibre (5) and is configured to carry out a modal excitation in the multi-mode fibre using the homogenized beam profile.
(FR) Le système laser (1) de l’invention comprend un dispositif d’homogénéisation de faisceau (5) destiné à homogénéiser un profil de faisceau, sensiblement gaussien, d’un faisceau laser (3) pour former un profil de faisceau homogénéisé. L’homogénéisation est réalisée à l’aide d’un élément optique (7) du dispositif d’homogénéisation de faisceau (5), lequel élément est réalisé sous la forme d’un élément optique réfractif, réflexif et/ou diffractif. Le système laser (1) comprend en outre une fibre multimode (5) et est conçu pour effectuer une excitation modale dans la fibre multimode à l’aide du profil de faisceau homogénéisé.
(DE) Das erfindungsgemäße Lasersystem (1) weist einen Strahlhomogenisierer (5) auf zur Homogenisierung eines im Wesentlichen gaußförmigen Strahlprofils eines Laserstrahls (3) zu einem homogenisierten Strahlprofil. Die Homogenisierung erfolgt unter Verwendung eines optischen Elements (7) des Strahlhomogenisierers (5), welches als refraktives, reflektives und/oder diffraktives optisches Element konfiguriert ist. Das Lasersystem (1) weist ferner eine Multimodenfaser (5) und ist konfiguriert zu einer Modenanregung in der Multimodenfaser unter Verwendung des homogenisierten Strahlprofils.
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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: German (DE)
Filing Language: German (DE)