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26 February 2013 Pulsed thulium doped fiber laser at 1.94 μm based on a seed diode
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A fiber laser operating at 1.94μm in pulsed regime has been developed in a MOPA configuration. The seed consists of a custom-developed board hosting a laser diode, whose current is modulated to achieve the desired pulse shape, duration and repetition rate. The pulses are amplified through a thulium-doped fiber amplifier pumped at 793 nm. The design of the amplifier stage has been performed by dynamic simulation of a rate-equations model and compared to the experimental measurements. Simulations and experimental measurements have exhibited comparable results, devising the realization of an effective pulsed laser system whose parameters can be easily tuned through the seed.
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Enkeleda Balliu, Massimo Olivero, Andrea Braglia, Alessio Califano, and Guido Perrone "Pulsed thulium doped fiber laser at 1.94 μm based on a seed diode", Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 860133 (26 February 2013); doi: 10.1117/12.2004984;

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