LIEKKI > TM Yb600-20/125 fibers are amplifier fibers with large core to cladding area ratio. The fibers have high photodarkening resistivity and a short application length. LIEKKI > TM Yb600-20/125 fibers are currently only available as double cladding (Yb600-20/125DC) fibers. > High peak power, moderate average power amplifiers High photodarkening resistivity Large core to cladding area ratio, short application length Marking Matching 6+1:1 pump to signal combiner is available LIEKKI > TM Yb600-20/125DC Optical Peak cladding absorption at 976 nm (nominal) dB/m (14.6) Cladding absorption at 920 nm dB/m 3.4 0.7 Core numerical aperture 0.08 ѱ 0.01 Geometrical and mechanical Core diameter m 20 ձ 2 Core concentricity error m < 1.5 Cladding diameter յm 125 2 Cladding geometry Octagonal Coating diameter ѵm 245 15 Coating material Low index acrylate Cladding numerical aperture > 0.46 Proof test kpsi > 100 > nLIGHT Corporation ѕ 5408 NE 88 th Street ? Vancouver, WA 98665 ? USA Tel. +1 360 566 4460 ? Fax. +1 360 546 1960 ? [email protected] ? www.nlight.net size="-1">