Second-Stokes generation in diode-side-pumped Nd:Gd3Ga5O12/BaWO4 Raman laser

A diode-side-pumped Q-switched second-Stokes laser emitting at 1322 nm employing Nd:Gd3Ga5O12 as the gain medium and BaWO4 as the Raman medium was realized. With a pump power of 125 W and pulse repetition rate of 20 kHz, a maximum second-Stokes output power of 3.8 W was obtained. The corresponding diode-to-second-Stokes conversion efficiency was 3% and the second-Stokes pulse width was 9.2 ns.