Fig. 1. Diagram of wavelength conversion in a diamond via cascaded Raman scattering

Fig. 2. Schematic of experimental setup for dual pump cascaded diamond Raman laser

Fig. 3. Schematic of resonant cavity eigen and pump transmission mode

Fig. 4. Output power of the first-, second-, and third-order Stokes light as a function of pump power, with identical output power for each order. (a) Pump power of 100 W; (b) pump power of 200 W; (c) pump power of 300 W

Fig. 5. Numerical simulation results. (a) Threshold of third-order Stokes light generation varied with output transmittance; (b) conversion efficiency of third-order Stokes light varied with output transmittance

Fig. 6. Curve of residual pump power with pump power

Fig. 7. Relationship between Stokes output power and output coupling transmittance, pump beam waist radius, and crystal length under different pump powers. (a) Output coupling transmittance; (b) pump beam waist radius; (c) crystal length