Apertureless SNOM imaging of the surface phonon polariton waves: what do we measure?
Apertureless SNOM imaging of the surface phonon polariton waves: what do we measure?
复制标题
表面声子极化波的无孔径 SNOM 成像：我们测量什么？
DOI：
10.1007/s00339-013-7869-y
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Ryssel
中科院分区：
文献类型：
--
作者：
Kazantsev;Ryssel
研究了在 SiC 极性晶体表面以与晶格共振相对应的频率激发的表面声子极化子 (SPP) 波的无孔径扫描近场显微镜 (ASNOM) 映射。具有明确方向和源位置的波以及众所周知的传播定律被用来校准 ASNOM 的信号。实验证明表明，在这种情况下，无论尖端响应模型如何，ASNOM 收集的信号都与表面上方的局部场振幅成正比（作为复数）。结果表明，描述 ASNOM 响应的表达式（一般情况下是表面/尖端介电常数、波长、尖端振动幅度、尖端形状等相当复杂的非线性函数）在中红外范围内的 SPP 波映射的情况下可以大大简化，因为尖端和表面的幸运组合正在考虑的情况的参数。尖端振动幅度远小于法线方向上运行的 SPP 波场衰减高度。同时，尖端振幅大于尖端-表面电磁近场相互作用发挥重要作用的特征距离。
The apertureless scanning near-field microscope (ASNOM) mapping of surface phonon polariton (SPP) waves being excited at the surface of the SiC polar crystal at a frequency corresponding to the lattice resonance was investigated. The wave with well-defined direction and source position, as well as a well-known propagation law, was used to calibrate the signal of an ASNOM. An experimental proof is presented showing that the signal collected by the ASNOM in such a case is proportional (as a complex number) to the local field amplitude above the surface, regardless of the tip response model.It is shown that the expression describing an ASNOM response, which is, in general case, rather complicated nonlinear function of a surface/tip dielectric constants, wavelength, tip vibration amplitude, tip shape etc., can be dramatically simplified in the case of the SPP waves mapping in a mid-IR range, due to a lucky combination of the tip and surface parameters for the case being considered. A tip vibration amplitude is much less than a running SPP wave field decay height in a normal direction. At the same time, the tip amplitude is larger than a characteristic distance at which a tip–surface electromagnetic near-field interaction plays a significant role.
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影响因子：
3.8
作者：
Brehm, M.;Schliesser, A.;Keilmann, F.
通讯作者：
Keilmann, F.
影响因子：
--
作者：
BARRON, TH
通讯作者：
BARRON, TH
影响因子：
4
作者：
Y. Chabal;A. Sievers
通讯作者：
A. Sievers
DOI：
10.1364/josaa.18.002998
发表时间：
2001-12-01
影响因子：
1.9
作者：
Bohn, JL;Nesbitt, DJ;Gallagher, A
通讯作者：
Gallagher, A