Experiment and modeling of a diode-pumped 1.3 mu m Nd : YVO4 laser passively Q-switched with PbS-doped glass

Savitski, Vasili and Malyarevich, A M and Yumashev, K V and Kalashnikov, V L and Sinclair, B D and Raaben, H and Zhilin, A A (2004) Experiment and modeling of a diode-pumped 1.3 mu m Nd : YVO4 laser passively Q-switched with PbS-doped glass. Applied Physics B: Lasers and Optics, 79 (3). pp. 315-319. ISSN 0946-2171 (https://doi.org/10.1007/s00340-004-1549-8)

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Abstract

A diode-pumped 1.34 mum Nd:YVO4 laser passively Q-switched with PbS quantum dots doped glass is presented. An average output power of 24 mW with a Q-switching efficiency of 13% and a Q-switched pulse width of 15 ns was obtained. A four level spectroscopic model of a PbS quantum dots doped glass saturable absorber is applied to numerically simulate passively Q-switched Nd:YVO4 laser operation. It has been shown that for the simulation of passive Q-switching of 1.3 mum Nd:YVO4 lasers with PbS doped glasses as the saturable absorbers, it is necessary to take into account intensity dependence of bleaching relaxation times.