Fig. 1. Schematic diagram of dual-wavelength Raman laser

Fig. 2. Theoretical Stokes beam fundamental mode spot radius in Raman laser resonator

Fig. 3. Stokes output power and residual fundamental laser power curve of dual wavelength Raman laser

Fig. 4. Optical spectrum of the first order Stokes with the maximum average output power of 3.78 W

Fig. 5. Beam quality measurement results of dual-wavelength Stokes with the maximum average output power of 3.78 W