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17 February 2017 Pulse-burst Er:glass laser
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We demonstrate a pulse-bursting phenomenon in Yb:Er glass laser operating at 1.54 μm. Glass-ceramic material with a low value of saturation threshold based on Co2+:β-ZnSiO4 nanocrystals was used as a passive gate for pulse-burst operation. The bursts of pulses were 1.5 ms long, each burst consisted of 40-55 pulses with 9-30 μJ energy per pulse and 0.2-3 μs pulse width. Bursting outputs arise via a coupling between slow switching arising via a slow pump modulation and fast pulsations resulting from Q-switch mechanism. We show that absorption cross-section strongly affects the mode of laser operation ranging from relaxation oscillations corresponding to low cross-section values to bursting and conventional Q-switch operation in the case of their higher values.
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Vladimir V. Vitkin, Olga S. Dymshits, Vadim M. Polyakov, Alexander A. Zhilin, Darya V. Shemchuk, Alexandr A. Krylov, Alexander V. Uskov, Andrey A. Mak, and Anton V. Kovalev "Pulse-burst Er:glass laser", Proc. SPIE 10082, Solid State Lasers XXVI: Technology and Devices, 1008224 (17 February 2017);

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