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10 February 2011 Polarized, 100 kW peak power, high brightness nanosecond lasers based on 3C optical fiber
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3C (Chirally-Coupled Core) optical fiber establishes a technological platform for high brightness, power scalable lasers with an engineerable fiber geometry that enables robustly single-mode performance of large core diameter fibers. Here we report the demonstration of robust polarization preserving performance of 35 μm core 3C fiber for short pulse systems. A polarization extinction ratio (PER) of ~ 20 dB is stably maintained with ambient temperatures varying over a 50°C range from a Yb-doped double clad 3C fiber amplifier. We also demonstrate that this high-PER polarization output is insensitive to temperature gradients and mechanical perturbations in the 3C fiber amplifier. The ability to deliver high peak power pulses at high average powers while maintaining exceptional beam quality and a stable polarization state in an easily integrated format makes 3C fiber laser systems extremely attractive for harmonic generation to visible and UV wavelengths.
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Michelle L. Stock, Chi-Hung Liu, Andrey Kuznetsov, Gaston Tudury, Almantas Galvanauskas, and Thomas Sosnowski "Polarized, 100 kW peak power, high brightness nanosecond lasers based on 3C optical fiber", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79140U (10 February 2011);

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