Abstract
We use seven-core Yb-doped large-mode-area (LMA) photonic crystal fiber (PCF) to demonstrate phase-locked amplification of , , laser pulses delivered by an LMA-PCF-laser–LMA-PCF-preamplifier system. Compression of the output of the multicore LMA-PCF amplifier with a grating compressor yields pulses with a peak power up to .
© 2010 Optical Society of America
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