Eye-Safe Solid-State Quasi-CW Raman Laser with Millisecond Pulse   Duration
  We demonstrate the first quasi-CW (ms-long pulses, pump duty cycle of 10%) end-diode pumped solid state laser generating eye-safe radiation via intracavity Raman conversion. The output power at the first Stokes wavelength (1524 nm) was 250 mW. A theoretical model was applied to analyze the laser system and provide routes for optimization. The possibility of true CW operation was discussed. 
Anton A. Kananovich, Vladimir I. Dashkevich, Pavel A. Apanasevich,   Dmitriy H. Zusin and Valentin A. Orlovich
physics.optics