Temperature dependence of stimulated Raman scattering from a VYO4 crystal

crystal have been investigated between 148 and 448 K. As the crystal temperature increases, the bond length increases and the crystal force constant decreases, and the phonon softening process arises in the crystal at high temperature. The temperature effect on Raman shift and full width at half maximum is explained in detail in terms of the phonon anharmonic effect. The temperature dependence of SRS can be well demonstrated by an empirical equation. This work can provide new insights into the further understanding of lattice anharmonicity and contribute to the discovery of new optoelectronic materials.