Order–disorder transitions in Langmuir–Blodgett films. III. Polarized Raman studies of cadmium arachidate using integrated optical techniques
Order–disorder transitions in Langmuir–Blodgett films. III. Polarized Raman studies of cadmium arachidate using integrated optical techniques
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III. 使用集成光学技术对花生酸镉进行偏振拉曼研究。
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
J. Rabolt
中科院分区：
文献类型：
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作者：
J. Rabe;J. Swalen;J. Rabolt
应用集成光学技术获得了花生酸镉（CdA） Langmuir-Blodgett （LB）多层膜的偏振拉曼测量值。利用非对称平板波导的横向电（TE）或横向磁（TM）模式交替激发，在其表面沉积的CdA多层膜中产生拉曼散射。对90°散射光进行分析，将偏振器放置在两个相互垂直的位置，用于波导的TE和TM模式，产生了一组四个测量值，用于确定CdA单层组件的方向和横向顺序。然后研究了LB膜的有序程度与温度的关系，并与本体CdA的有序程度进行了比较。在这两种情况下，有序-无序转变的温度是相似的，并且与先前红外研究的结果一致。
Polarized Raman measurements of Langmuir–Blodgett (LB) multilayers of cadmium arachidate (CdA) have been obtained through the application of integrated optical techniques. Excitation of either the transverse electric (TE) or transverse magnetic (TM) mode of an asymmetric slab waveguide was alternately used to produce Raman scattering in the CdA multilayers deposited on its surface. Analysis of the 90° scattered light with a polarizer placed at two mutually perpendicular positions for both the TE and TM modes of the waveguide produced a set of four measurements which were used to determine the orientation and lateral order of the CdA monolayer components. The extent of order in the LB film was then investigated as a function of temperature and compared with that of bulk CdA. The temperature of the order–disorder transition was found to be similar in both cases and consistent with that found previously from infrared studies.