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Published on: July 12, 2017
Passively mode-locked diode-pumped Nd:YVO4 oscillator operating at an ultralow repetition rate
D N Papadopoulos1, S Forget, M Delaigue
1Laboratoire Charles Fabry de l'Institut d'Optique, Unité Mixte de Recherche 8501 du Centre National de la Recherche Scientifique, Université Paris-Sud, 91403 Orsay, France.
Abstract:
We demonstrate the operation of an ultralow-repetition-rate, high-peak-power, picosecond diode-pumped Nd:YVO4 passively mode-locked laser oscillator. Repetition rates lower than 1 MHz were achieved with the use of a new design for a multiple-pass cavity and a semiconductor saturable absorber. Long-term stable operation at 1.2 MHz with a pulse duration of 16.3 ps and an average output power of 470 mW, corresponding to 24-kW peak-power pulses, is reported. These are to our knowledge the lowest-repetition-rate high-peak-power pulses ever generated directly from apicosecond laser resonator without cavity dumping.
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