Fig. 1. Experimental setup of multi-wavelength diamond Raman laser in red

Fig. 2. The fundamental transverse modes of various Stokes orders in the diamond Raman oscillator

Fig. 3. Output laser spectra of diamond cascade Raman lasers at different pump energies

Fig. 4. (a) Stokes energy versus pump energy for each wavelength; (b) Total Stokes energy, efficiency versus pump energy

Fig. 5. Temporal behavior and near-field spot : (a) Pump; (b) Second-order Stokes; (c) Third-order Stokes; (d) Fourth-order Stokes