Multimode pumped continuous-wave solid-state Raman laser

We demonstrate the continuous-wave operation of a solid-state Raman laser containing a barium nitrate crystal as the Raman medium. The Raman laser, which has a singly resonant cavity, is pumped by multimode radiation. The Raman oscillation threshold is reached at ∼2 W of pump power. As much as 500 kW/cm2 of Stokes power density at 60‐kW/cm2 pump power density is obtained in the cavity.