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We report the green-enhanced (530 nm) super-continuum generation in a tapered photonic crystal fiber by 280 pJ pulses from a mode-locked Yb:fiber laser. This system offers a technique for efficient ƒceo beating signal detection.
Measurements of the free running carrier envelope offset frequency (fceo) linewidth of a similariton based optical frequency comb show that the frequency noise of the laser is independent of net cavity dispersion.
We report 40 dB S/N ratio fceo obtained from a 528 MHz repetition rate femtosecond Yb:fiber laser without amplifications. This system offers a potential for real-world fiber laser frequency comb generation.
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