1.Department of Physics, Shandong University，Jinan 250100，China 2.School of Environmental Science and Engineering, Shandong University，Jinan 250100，China 3.National Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
Abstract：The factor group symmetry analysis method was used to analyse the Raman spectra of neodymium-doped yttrium orthoanadate Nd:YVO4 which were measured at room temperature with different geometrical configurations. All the Raman peaks were assigned on the basis of the group theory and lattice dynamics thoery. According to the peak numbers of the Raman spectra, we concluded that the primitive cell of Nd:YVO4 contains four formula units.
Key words：Raman spectra;Laser crystal;Factor group
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