RAMAN-SCATTERING AND ATTENUATED-TOTAL-REFLECTION STUDIES OF SURFACE-PLASMON POLARITONS
RAMAN-SCATTERING AND ATTENUATED-TOTAL-REFLECTION STUDIES OF SURFACE-PLASMON POLARITONS
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DOI：
10.1103/physrevb.33.789
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发表时间：
1986-01-15
影响因子：
3.7
通讯作者：
HEMMINGER, JC
中科院分区：
文献类型：
--
作者：
KUROSAWA, K;PIERCE, RM;HEMMINGER, JC
我们现场测量了由玻璃棱镜、银膜、MgF2隔离层和折射率与其折射率相匹配的液体混合物组成的层状结构的衰减全反射(ATR)和拉曼散射。当激光入射角度与ATR角一致时，银膜的表面等离子激元(SPP)被共振激发，液体的拉曼散射强度出现最大值。在斯托克斯散射光的频率下也观察到了同样的效应。通过测量液体的拉曼散射强度随MgF2隔离层厚度的增加而减小的情况，确定了SPP场进入液体的衰减长度(L D)。L d=1539Å的实测值与计算值1534Å相吻合。
We have made in situ measurements of attenuated total reflection (ATR) and Raman scattering from a layered structure consisting of a glass prism, a thin silver film, an MgF 2 spacer, and a liquid mixture whose refractive index is matched to that of MgF 2. When the incident angle of the laser beam coincides with the ATR angle, the surface-plasmon polariton (SPP) of the silver film is excited resonantly and the Raman scattering intensity of the liquid shows a maximum. The same effect is observed at the frequency of the Stokes scattered light. By measuring the decrease of the Raman scattering intensity of the liquid with increase of the thickness of the MgF 2 spacer layer, we have determined the decay length (l d) of the SPP field into the liquid. The measured value of l d= 1539 Å agrees with the calculated value, 1534 Å.