宁宁^1，， 房文汇^1，2，*， 郑浩财^1，， 容广健^1，， 张喜和^1，， 胡婷婷^1，

（  1、长春理工大学理学院，长春 130022；       2、吉林大学物理学院，长春 130022；  ）

摘要： 利用激光诱导击穿效应在二硫化碳中获得了硫二相（S-Ⅱ）的受激拉曼散射光谱（SRS）。当激光强度大于液体的击穿阈值时，将产生冲击波，同时伴随产生动高压和温度场。实验获得了S-Ⅱ相的289cm-1的E弯曲振动模式和490cm-1的A1对称伸缩振动模式。当强冲击波产生的压强和温度场处于S-Ⅱ相的稳态范围时，激光分解产生了S-Ⅱ相的结构。激光诱导击穿所引发的高动态压强和静电场使A1振动模式频移变大。
关键词： 光学；等离子体；受激拉曼散射

NING Ning^1,， FANG Wenhui^1,*， ZHENG Haocai^2,， RONG Guangjian^1,， ZHANG Xihe^1,， HU Tingting^1,

（  1、School of Science,Changchun University Of Science And Technology,Changchun 130022；       2、College of Physics,Jilin University,Changchun 130022；  ）

Abstract： The study of Stimulated Raman scattering (SRS) of sulfur-II (S-II) phase was investigated by laser decomposition of carbon disulfide.The carbon disulfide was existed as liquid. Above a threshold of the laser intensity, it is suggested. 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, because of the strong shock wave generates the stable pressure-temperature range of S-II phase. The dynamic highpressure and static-electric field generated by laser-induced breakdown results in the softening A1 mode becoming more hardened.
Keywords： optics; plasma; Stimulated Raman Scattering

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