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Passive mode locking in a diode-pumped Nd:GdVO4 laser with a semiconductor saturable absorber mirror

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4 Author(s)
Sanjun Zhang ; Dept. of Phys., East China Normal Univ., Shanghai, China ; E. Wu ; Haifeng Pan ; Heping Zeng

We demonstrate Q-switched and CW passive mode locking in a laser-diode-pumped Nd:GdVO4 laser with a semiconductor saturable absorber mirror. The repetition rate of the Q-switched envelope increased from 23.1 to 260 kHz as the pump power increased from 1.75 to 13.0 W. At a pump power of 13.7 W, the Q-switched mode locking changed to CW mode locking. The maximum average output power of 4.9 W with a 140-MHz repetition rate was obtained at a pump power of 17.9 W and the single mode-locked pulse energy was 0.035 μJ. The CW mode-locked pulse duration was measured to be ∼11.5 ps.

Published in:

IEEE Journal of Quantum Electronics  (Volume:40 ,  Issue: 5 )