Abstract

We report a mode-locked fiber laser working at a 1 GHz fundamental repetition rate. The laser delivers a 600 mW average power at a pump power of 1800 mW. The pulse spectrum bandwidth was 23 nm to support 64 fs near-transform-limited pulses. An octave-spanning supercontinuum from 590 to 1350 nm was generated in a tapered photonic crystal fiber solely with the mode-locked fiber-laser output, without amplifiers. A 30 dB $f_{\mathrm{ceo}}$ beat signal was detected via $f\text{-}\text{to}\text{-}2f$ interferometer.

© 2015 Optical Society of America

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