Abstract
We report what we believe to be the first demonstration of stable short pulse generation from a gain-switched Tm-doped fiber laser in the spectral region. A modulated pump laser was used for fast gain switching to regulate the conventionally chaotic spiking in the gain-switched fiber laser. From a core all-fiber oscillator, over a kilowatt of peak power was obtained at the slope efficiency of 50% and freely varying repetition rate up to .
© 2007 Optical Society of America
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