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EP 3 987 618 A1

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(43) Date of publication: 27.04.2022 Bulletin 2022/17 (21) Application number: 19735497.0 (22) Date of filing: 19.06.2019

(51) International Patent Classification (IPC):  H01S 5/0625(2006.01) H01S 5/14(2006.01) H01S 5/026(2006.01) H01S 5/065(2006.01) H01S 5/068(2006.01) H01S 5/022(2021.01) H01S 5/06(2006.01) H01S 5/10(2021.01) (52) Cooperative Patent Classification (CPC): H01S 5/026; H01S 5/0612; H01S 5/0617; H01S 5/06256; H01S 5/0656; H01S 5/06808; H01S 5/101; H01S 5/146; H01S 5/142; H01S 5/1039; H01S 5/02251 (86) International application number: PCT/EP2019/066300 (87) International publication number: WO 2020/253960 (24.12.2020 Gazette 2020/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. 80686 München (DE)	(72) Inventors: HAPPACH, Magnus 8634 Hombrechtikon (DE) DE FELIPE MESQUIDA, David 12049 Berlin (DE) KEIL, Norbert 14089 Berlin (DE) SCHELL, Martin 10437 Berlin (DE) (74) Representative: Maikowski & Ninnemann Patentanwälte Partnerschaft mbB  Postfach 15 09 20 10671 Berlin 10671 Berlin (DE)