Abstract
290 fs soliton pulses at 1.56 μm have been successfully obtained for the first time from a laser-diode pumped erbium-doped fiber laser with a nonlinear amplifying loop mirror. The laser was pumped by InGaAsP laser diodes and the threshold for starting the pulse oscillation was 50 mW. The passive mode-locking continued to a pump power level as low as 10 mW. The repetition rate was uncontrollable and varied between the fundamental repetition rate of 5 MHz and 1.2–2 GHz.
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