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Download Data Sheet - Laser Lines Ltd.

Download Data Sheet - Laser Lines Ltd.

Download Data Sheet - Laser Lines

HIGH-POWER SEMICONDUCTOR LASERS AND FIBERS LIEKKI TM Yb1200-20/400 Large Mode Area Ytterbium Doped Fiber LIEKKI TM Yb1200-20/400 fibers are highly doped fibers for medium power fiber lasers and amplifiers. They combine a large core with excellent beam quality and 400 μm cladding capable of accepting medium pump powers. LIEKKI TM Yb1200-20/400 fibers are available as double cladding (Yb1200-20/400DC) and double cladding polarization maintaining (Yb1200-20/400DC-PM) fibers. Applications • Medium power CW on pulsed fiber lasers and amplifiers • Medical, industrial and scientific applications • Medium power, high beam quality applications Features • Medium pump absorption (Yb1200-20/400DC-PM) • High pump absorption (Yb1200-20/400DC) • Low photodarkening • Large, low NA core • Low non-linear effects • High birefringence (Yb1200-20/400DC-PM) • Excellent beam quality • Large cladding for medium power pumping • Multimode combiners available (Yb1200-20/400DC) Typical device specification LIEKKI TM Yb1200-20/400DC LIEKKI TM Yb1200-20/400DC-PM Optical Peak cladding absorption at 976 nm (nominal) dB/m (3.0) (3.0) Cladding absorption at 920 nm dB/m 0.7 ± 0.2 0.7 ± 0.2 Core numerical aperture 0.07 ± 0.01 0.07 ± 0.01 Birefringence > 1.4E-04 Geometrical and mechanical Core diameter µm 20 ± 2 20 ± 2 Core concentricity error µm < 1.5 < 1.5 Cladding diameter µm 400 ± 15 400 ± 15 Cladding geometry octagonal round Coating diameter µm 500 ± 15 500 ± 15 Coating material low index acrylate low index acrylate Cladding numerical aperture > 0.46 > 0.46 Proof test kpsi > 50 > 50 nLIGHT Corporation • 5408 NE 88 th Street • Vancouver, WA 98665 • USA Tel. +1 360 566 4460 • Fax. +1 360 546 1960 • fibers@nlight.net • www.nlight.net

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