EP 4042214 A1 20220817 - DEVICE AND METHOD FOR TRANSPORTING PULSED LASER RADIATION USING A HOLLOW-CORE OPTICAL FIBER
Title (en)
DEVICE AND METHOD FOR TRANSPORTING PULSED LASER RADIATION USING A HOLLOW-CORE OPTICAL FIBER
Title (de)
VORRICHTUNG UND VERFAHREN ZUM TRANSPORT VON GEPULSTER LASER-STRAHLUNG MIT EINER HOHLKERNLICHTLEITFASER
Title (fr)
DISPOSITIF ET PROCÉDÉ DE TRANSPORT D'UN RAYONNEMENT LASER PULSÉ À L'AIDE D'UNE FIBRE OPTIQUE À ÂME CREUSE
Publication
Application
Priority
- DE 102019127422 A 20191011
- EP 2020078500 W 20201009
Abstract (en)
[origin: WO2021069716A1] The invention relates to a device (11) for transporting pulsed laser radiation with a pulse energy which leads to highly intensive laser pulses (3C) with a compressed pulse duration. The device comprises a pulse duration setting device (13), a hollow-core optical fiber (1), and a fiber coupling device (17). The pulse duration setting device (13) is designed to receive the pulsed laser radiation and set the transport pulse duration (Δt_t) of the laser radiation. The hollow-core optical fiber (1) has a hollow core (4A) surrounded by a material (4B), and the hollow-core optical fiber (1) transports laser pulses (3B), which are coupled at a first fiber end (1A), in the hollow core (4A) to a second fiber end (1B) and decouples the laser pulses there. The invention proposes an operation of the hollow-core optical fiber (1) with beam path parameter values (X, α) at the first fiber end (1A), said values lying in a target tolerance range (ΔX_S). The fiber coupling device (17) is designed to receive laser radiation set to the transport pulse duration (Δt_t) and couple said radiation into the hollow-core optical fiber (1) with the beam path parameter values (X, α) which lie in the target tolerance range (ΔX_S). The transport pulse duration (Δt_t) is set such that for all beam path parameter values (X, α) in the target tolerance range (ΔX_S), the laser radiation is coupled into the hollow core (4A) while preserving the material and/or the structure (37) of the hollow-core optical fiber (1).
IPC 8 full level
G02B 6/032 (2006.01); G02B 6/02 (2006.01); G02B 6/32 (2006.01); G02B 6/42 (2006.01); H01S 3/00 (2006.01)
CPC (source: CN EP US)
B23K 26/0624 (2015.10 - EP); G02B 6/02304 (2013.01 - CN EP); G02B 6/02323 (2013.01 - CN EP); G02B 6/02328 (2013.01 - CN EP); G02B 6/02347 (2013.01 - CN EP); G02B 6/032 (2013.01 - CN EP US); G02B 6/32 (2013.01 - CN EP); G02B 6/4206 (2013.01 - US); G02B 6/4296 (2013.01 - CN EP); H01S 3/005 (2013.01 - CN EP); H01S 3/0057 (2013.01 - US); H01S 3/0057 (2013.01 - EP)
Citation (search report)
See references of WO 2021069716A1
Designated contracting state (EPC)
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 state (EPC)
BA ME
DOCDB simple family (publication)
DE 102019127422 A1 20210415; CN 114556176 A 20220527; EP 4042214 A1 20220817; US 2022229248 A1 20220721; WO 2021069716 A1 20210415
DOCDB simple family (application)
DE 102019127422 A 20191011; CN 202080071338 A 20201009; EP 2020078500 W 20201009; EP 20789589 A 20201009; US 202217714155 A 20220406