Abstract
We report on a high-power passively mode-locked oscillator, diode-pumped, with pulse durations adjustable between and . The duration tunability was obtained by varying the output coupler (OC) transmission while avoiding resorting to spatial hole burning (SHB) for pulse shortening. At a repetition rate of and for an output power ranging from , we produced SHB-free -long pulses. Within this range of power, these are the shortest pulse durations obtained directly from oscillators.
© 2010 Optical Society of America
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