Abstract
A high-energy femtosecond fiber amplifier using a large-mode-area single-mode erbium-ytterbium-codoped photonic-crystal fiber is presented. 700-fs pulses at 1557nm were amplified and compressed to near-transform-limited 100-fs, 7.4-nJ pulses with >50-kW peak powers without chirped-pulse amplification.
© 2005 Optical Society of America
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