title: Kilowatt-level cladding light stripper for high-power fiber laser.
abstract: We designed and fabricated a high-power cladding light stripper (CLS) by combining a fiber-etched CLS with a cascaded polymer-recoated CLS. The etched fiber reorganizes the numerical aperture (NA) distribution of the cladding light, leading to an increase in the leakage power and a flatter distribution of the leakage proportion in the cascaded polymer-recoated fiber. The index distribution of the cascaded polymer-recoated fiber is carefully designed to ensure an even leakage of cladding light. More stages near the index of 1.451 are included to disperse the heat. The CLS is capable of working consistently under 1187 W of cladding light with an attenuation of 26.59 dB, and the highest local temperature is less than 35°C.
authors.forename: Ping
authors.initials: P
authors.lastname: Yan
authors.forename: Junyi
authors.initials: J
authors.lastname: Sun
authors.forename: Yusheng
authors.initials: Y
authors.lastname: Huang
authors.forename: Dan
authors.initials: D
authors.lastname: Li
authors.forename: Xuejiao
authors.initials: X
authors.lastname: Wang
authors.forename: Qirong
authors.initials: Q
authors.lastname: Xiao
authors.forename: Mali
authors.initials: M
authors.lastname: Gong