期刊
OPTICS EXPRESS
卷 18, 期 24, 页码 24770-24792出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.18.024770
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- U. S. Army Research Laboratory [W911NF-07-2-0048]
We report what we believe to be record performance for a high average power Yb:YAG cryogenic laser system with sustained output power. In a CW oscillator-single-pass amplifier configuration, 963 W of output power was measured. In a second configuration, a two amplifier Yb: YAG cryogenic system was driven with a fiber laser picosecond ultrafast oscillator at a 50 MHz repetition rate, double-passed through the first amplifier and single-passed through the second, resulting in 758 W of average power output. Pulses exiting the system have a FWHM pulsewidth of 12.4 ps, an energy/pulse of 15.2 mu J, and a peak power of 1.23 MW. Both systems are force convection-cooled with liquid nitrogen and have been demonstrated to run reliably over long time periods. (C) 2010 Optical Society of America
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