若丹明B荧光增强二硫化碳高阶受激喇曼散射
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摘要: 利用若丹明B乙醇溶液的荧光改变了二硫化碳的一至三阶Stokes喇曼谱线的强度分布，选择性地增强了三阶Stokes喇曼谱线。在泵浦功率密度为~560MW.cm-2时，对染料摩尔浓度分别为~10-5、cm-5散射池和~10-4、1cm散射池进行实验，观察到二硫化碳的三阶Stokes喇曼谱线与染料激光形成的共振增强现象及、二阶Stokes喇曼谱线的部分或完全耗尽。Abstract: The light intensity of the first-to thrid-order Stokes Raman spectra Raman spectra lines of Carbon disulfide is altered by using fluorescence of dye Rhodamine B in ethanol. The third-order Stokes Raman spectrum line is selectively enhanced. When the pumping power density is ~560MW× cm- 2, phenomena of resonance between the third-order Stokes Raman spectrum line and the dye laser, and of the part or complete depletion of the first and the second-order Stodes Raman spectra line are observed. The concentration of dye Rhodamine B is ~10- 5M and ~10- 4M, and the cell length is 5cm or 1cm. The physical mechanism of the phenomena is discussed.
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Key words:
- stimulated raman scattering /
- fluorescencel rhodamine b /
- carbon disulfide /
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