Efficient multiwave Stokes and anti-Stokes operation of a Raman parametric laser based on a tetragonal NaLa(MoO4)2 crystal

Picosecond pumping resulted in efficient stimulated Raman scattering in the NaLa(MoO₄)₂ with two Raman-active vibrational modes ν_R = 320 and 888 cm^–1. All Stokes and anti-Stokes Raman components were identified for different orientations of the crystal and different polarisations of the excitation. For the first time, infrared pump radiation (λ_p = 1.06415 μm) was converted to the visible range (λ_as81 = 0.6058 μm) in a Raman-active insulator crystal (ν_R1 = 888 cm^–1).