罗丹明B荧光增强苯受激拉曼散射研究

将液芯光纤技术与荧光增强受激拉曼散射技术相结合,能够大大增强受激拉曼散射光谱强度,降低受激拉曼散射阈值。通过对罗丹明B苯溶液在液芯光纤中的受激拉曼散射进行研究,结果表明:荧光染料Rhodamine B可以降低苯溶液的各阶受激拉曼散射阈值近一个数量级;在一定浓度范围内(10-6mol/L~10-8mol/L)各阶Stokes阈值随浓度降低而降低,并在理论上给出了解释。并且理论推导了在荧光种子作用下的四阶耦合波方程。液芯光纤中的受激拉曼光谱技术在对实现宽带受激辐射激光器、种子激光,以及生物大分子结构研究、生物分子的非生物过程研究等领域等有光明应用前景。

Study of Rhodamine B Fluorescence Enhancement Benzene of Stimulated Raman Scattering

The technique of liquid core optical fiber(LCOF) is applied together with the stimulated Raman scattering of fluorescence enhancement,the spectral intensity of SRS can be considerably enhanced and threshold value of SRS can be lowered.By taking the study of Rhodamine B fluorescence enhancement benzene of stimulated Raman scattering in liquid core optical fiber.The results of this study represent that:Each order threshold can be reduced by using Rhodamine B(RhB) in benzene solution by one-order of magnitude;when the concentration of the solution is between 10-6 mol/L~10-8 mol/L,the Stokes threshold becomes low with the depress of concentration.The theory analysis is obtained.Raman spectra technology in liquid core optical fiber will have a good future when it is applied in the broadband stimulates radiation laser,the seeding laser,biomacromolecule architectural study and biomolecular biological process research areas.