Abstract

Amplification of femtosecond pulses at 1.56μm based on noncollinear parametric chirped pulse amplification in a potassium titanyl arsenate (KTA) crystal with pumping at 1.05μm is reported. The 100fs pulses of an erbium fiber laser are parametrically amplified while synchronously pumped by an amplified mode-locked Nd:YLF laser. This amplifier has a saturated gain of 65dB with 30% conversion efficiency and has produced 160fs pulses with peak powers of up to 0.75GW. The system produced 380mW before compression and can be readily scaled to the multiwatt range with bandwidths to support sub-100fs pulses.

© 2006 Optical Society of America

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