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Satellite pulse generation in diode-pumped passively Q-switched Nd:GdVO/sub 4/ lasers

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4 Author(s)
S. P. Ng ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore ; D. Y. Tang ; L. J. Qian ; L. J. Qin

We have both experimentally and numerically investigated the satellite pulse generation in diode-pumped passively Q-switched Nd:GdVO 4 lasers with Cr4+:YAG saturable absorber. We show experimentally that satellite pulse generation is a general effect of the lasers under strong pumping, and its formation is always associated with the appearance of strong Q-switched pulses. Satellite pulse generation of the lasers is further numerically simulated based on a coupled rate-equation model. Our numerical simulations show that the phenomenon is caused by the finite lifetime of the lower laser energy level of the lasers

Published in:

IEEE Journal of Quantum Electronics  (Volume:42 ,  Issue: 7 )