Frequency modulation mode-locking and Q-switching of diode-laser-pumped Nd:YLF laser

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Abstract
Using frequency modulation (FM) mode-locking techniques, and pumping with a 500 mW laser diode we have developed a Nd: YLF (yttrium lithium fluoride) laser operating at 1053nm that produces 49 mW average power in pulse durations of 9ps. When this system is Q-switched the energy within the 90 ns pulse envelope is 17µJ. The average mode-locked pulse duration within this envelope is 21 ps giving rise to a peak power of 22 kW.