Abstract

Raman tensors, one of the basic physical properties of ${{\rm MoS}_2}$, are rarely reported. Here, angle-resolved polarized Raman scatterings on basal and cross planes of layered ${{\rm MoS}_2}$ were carried out using the geometry configuration of parallel polarization, and the Raman tensors of three optical vibration modes were systematically studied. As a polar vibration mode, the differential polarizability of the ${{\rm A}_{1{\rm g}}}$ mode corresponding to the Raman tensor along the $c$ direction is larger than that along the $a$ direction. In addition, it is also larger than that formed by ${{\rm E}_{2{\rm g}}}$ and ${{\rm E}_{1{\rm g}}}$ modes. All the experimental results above are beneficial to the understanding of inelastic light-scattering process of ${{\rm MoS}_2}$.

© 2020 Optical Society of America

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