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Opt Express. 2008 Mar 17;16(6):3674-9.

High-energy, diode-pumped, nanosecond Yb:YAG MOPA system.

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  • 1Max-Planck-Institute for Quantum Optics (MPQ), Hans-Kopfermann-Str. 1, 85748 Garching, Germany.


Diode-pumped nanosecond multi-pass laser amplification to the joule level using an Yb:YAG slab crystal has been demonstrated. A maximum output pulse energy of 2.9 J at an optical-to-optical efficiency of 10% has been achieved. The seed pulses with a pulse duration of 6.4 ns were generated in a Q-switched Yb:YAG laser and amplified up to a pulse energy of 200mJ in a multi-pass booster amplifier. A maximum average output power of 15W at a repetition rate of 10 Hz has been measured. We also present a relay imaging semi-stable cavity for multi-pass amplification and a diode-pumping scheme employing horizontally stacked high-power laser diodes.

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