title: [Raman spectra for YVO4 and Nd:YVO4 crystals].
abstract: In this paper, the measured Raman spectra of YVO4 and Nd: YVO4 crystals were reported. These results give a clear information on the phonon energy spectra, these are several discrete phonons in low energy region, then nothing shows up in a large space from 500-800 cm-1 and main portion of phonon spectra is distributed in the region of 800-900 cm-1. Based on the group theory, the symmetries for Raman lines can be deduced, and they are almost due to the vibration of VO(4)3- ion. The effect of uneven distribution for phonon spectra on the optical transition and laser performance are discussed. The restraint action of doped ion on the high energy phonon is found.
authors.affiliation: Department of Pyhsics, Fujian Teachers University, 350007 Fuzhou.
authors.forename: R
authors.initials: R
authors.lastname: Xu
authors.forename: J
authors.initials: J
authors.lastname: Chen
mesh_terms: D003460:Crystallization; D009354:Neodymium / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000295:instrumentation; D014639:Vanadium / Q000737:chemistry; D017968:Vanadium Compounds / Q000737:chemistry*; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D017968:Vanadium Compounds; D014639:Vanadium; D009354:Neodymium; D015018:Ytterbium