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(11)

EP 4 487 426 A1

(12)

(43) Date of publication: 08.01.2025 Bulletin 2025/02 (21) Application number: 23710522.6 (22) Date of filing: 09.02.2023

(51) International Patent Classification (IPC):  H01S 3/067(2006.01) H01S 3/0941(2006.01) H01S 3/094(2006.01) (52) Cooperative Patent Classification (CPC): H01S 3/094042; H01S 3/094003; H01S 3/094096; H01S 3/09415; H01S 3/06754; H01S 3/0675 (86) International application number: PCT/US2023/012729 (87) International publication number: WO 2023/167775 (07.09.2023 Gazette 2023/36)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 04.03.2022 US 202217687575 (71) Applicant: NLIGHT, Inc. Camas, WA 98607 (US)	(72) Inventors: KANSKAR, Manoj Camas, WA 98607 (US) ZHANG, Jiamin Camas, WA 98607 (US) (74) Representative: Dehns  10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)