Passively mode-locked high-power Nd:YAG lasers. with multiple laser heads |
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| Authors: | GJ Spühler T Südmeyer R Paschotta M Moser KJ Weingarten U Keller |
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| Institution: | (1) Chemistry Department, M.V. Lomonosov Moscow State University, Vorob'evy Hills, 119992 GSP-2 Moscow, Russia;(2) Forschungszentrum Karlsruhe, Institut für Instrumentelle Analytik, Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany;(3) The Institute for the Physics of Microstructures of Russian Academy of Sciences, 603600 GSP-105 Nizhni Novgorod, Russia;(4) Chemistry Department, M.V. Lomonosov Moscow State University, Vorob'evy Hills, 119992 GSP-2 Moscow, Russia |
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| Abstract: | We discuss power scaling of passively mode-locked lasers using multiple laser heads in the resonator. We experimentally compared two different approaches for the cavity design, both using three side-pumped Nd:YAG laser heads. We obtained a record-high average output power of up to 27 W with close to diffraction-limited beam quality, a pulse duration of 19 ps, a pulse energy of 0.5 7J, and 23 kW peak power. Single-pass second-harmonic generation in a 10-mm-long LBO crystal yields 16.2 W of 532-nm radiation. |
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