Abstract
A multi-wavelength passively Q-switched self-Raman laser with a c-cut Nd:YVO4 both as laser and Raman medium is reported. With the increasing pump power, the multi-wavelength laser including the fundamental line at 1067.4nm, 1st-Stokes at 1097.9nm, 2nd-Stokes at 1130.1nm, and 3rd-Stokes at 1163.6nm is generated sequentially. At a pump power of 5.0W, the maximum output power of the four discrete lines are 186.8mW, 246.5mW, 158.4mW and 63.6mW, with corresponding optical conversion efficiencies of 3.7%, 4.9%, 3.2% and 1.3% respectively. The total stimulated Raman scattering conversion efficiency is 9.4%. To our best knowledge, this is the first report of the 2nd-Stokes at 1130.1nm and 3rd-Stokes at 1163.6nm.
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