title: Stimulated Raman scattering from sulfur-II produced by laser decomposition of liquid carbon disulfide.
abstract: Stimulated Raman scattering (SRS) of sulfur-II (S-II) phase was investigated by laser decomposition of liquid carbon disulfide. As a matter of fact, above a threshold of the laser intensity, it is suggested that a strong shock wave is generated in the liquid carbon disulfide, which is decomposed owing to the induced high dynamic pressure and temperature. One bending mode E frequency at 289 cm(-1) and one symmetric stretching mode A1 frequency at 490 cm(-1) of S-II phase were observed. The SRS spectra indicated that S-II structure is formed by laser decomposition, as the strong shock wave generates the stable pressure-temperature range of S-II phase. The dynamic high-pressure and static-electric field generated by laser-induced breakdown results in the softening A1 mode becoming more hardened.
authors.affiliation: State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, China.
authors.forename: Wenhui
authors.initials: W
authors.lastname: Fang
authors.forename: Zhanlong
authors.initials: Z
authors.lastname: Li
authors.forename: Dongfei
authors.initials: D
authors.lastname: Li
authors.forename: Zuowei
authors.initials: Z
authors.lastname: Li
authors.forename: Mi
authors.initials: M
authors.lastname: Zhou
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Men
authors.forename: Chenglin
authors.initials: C
authors.lastname: Sun