Abstract
We demonstrate high-single-pass-gain broadband amplification in Yb:CaF2 crystal pumped with a high-brightness source based on an ultra-large-core photonic-crystal fiber-rod. 3-fold single-pass gain enhancement was obtained in a 10-mm-long room-temperature Yb:CaF2, which significantly outperforms any cw-diode-pumped scheme.
© 2011 Optical Society of America
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