Dispersion of Phonon‐Like Surface Polaritons on α‐Quartz Observed by Attenuated Total Reflection
Dispersion of Phonon‐Like Surface Polaritons on α‐Quartz Observed by Attenuated Total Reflection
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通过衰减全反射观测α-石英上类声子表面极化子的色散
DOI：
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发表时间：
1973
期刊：
影响因子：
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通讯作者：
A. Otto
中科院分区：
文献类型：
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作者：
H. J. Falge;A. Otto
在35012 0 cm−1的频率范围内，在平行和垂直于c轴的两个晶面上测量了α石英上普通和异常声子表面极化的色散，覆盖了除垂直于光轴的偏振最低的两个以外的所有剩余辐射频带。所用的方法是横向磁极化辐射的衰减全反射法。计算结果与利用文献值计算横向和纵向光学声子频率的色散曲线的理论计算非常一致。观测到了所谓的“虚激发”表面极化子的截止波矢，与理论一致。
[忽略俄语文本]。
The dispersion of ordinary and extraordinary phonon-like surface polaritons on α-quartz has been measured on two crystallographic faces parallel and perpendicular to the c-axis in the frequency range 350 to 1200 cm−1, covering all reststrahlen bands except the two lowest for polarization perpendicular to the optical axis. The method used was the attenuated total reflection method for transverse magnetic polarized radiation. The results are in very good agreement with theoretical calculations of the dispersion curves, using literature values for the freguencies of transverse and longitudinal optical phonons. Cut-off wave vectors for so called “virtual excitation” surface polaritons are observed in agreement with theory.
[Russian Text Ignored].