Journal
OPTICS EXPRESS
Volume 16, Issue 26, Pages 21936-21941Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.16.021936
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This paper reports on the results of research into passively mode-locked fiber laser with a record-setting optical length of the resonant cavity amounting to 3.8 km. Significant elongation of the laser resonator led to more than two orders of magnitude increase in the output pulse energy at the same pump radiation power. At ultra-low (for mode-locked lasers) pulse repetition rate (77 kHz) and pulse duration of 3 ns the energy per pulse reached 3.9 mu J. At this moment this is the highest pulse energy on record generated directly from a mode-locked laser without Q-switching, cavity dumping techniques, or additional optical amplifiers. (C) 2008 Optical Society of America
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