Development of a Hybrid Scanning Near-field Optical/Tunneling Microscope (SNOM/STM) System
Development of a Hybrid Scanning Near-field Optical/Tunneling Microscope (SNOM/STM) System
复制标题
混合扫描近场光学/隧道显微镜 (SNOM/STM) 系统的开发
DOI：
10.1380/jsssj.20.509
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
W. Knoll
中科院分区：
文献类型：
--
作者：
K. Nakajima;R. Micheletto;K. Mitsui;T. Isoshima;M. Hara;T. Wada;H. Sasabe;W. Knoll
扫描近场光学显微镜（SNOM）与扫描隧道显微镜（STM）相结合，用于研究纳米光学现象在近场区和附近。该系统是通过引入一个具有极小孔径的双金属涂层光纤针尖来实现的，在该针尖上进行金属涂层以获得半透明的导电针尖。对Au（111）表面进行同步SNOM/STM观察，其中通过孔径位于尖端附近的倏逝场被样品的局部结构散射，并且散射光的远场分量被收集作为光信号。在恒流条件下进行距离控制，以分离光学特性和表面形貌。实现了λ/100的光学分辨率和相同的电子和光子的通道输运。
A scanning near-field optical microscope (SNOM) combined with a scanning tunneling microscope (STM) is used to investigate nanoscopic optical phenomena both in the near-field region and in the proximity. The system is realized by introducing a doubly metal-coated optical fiber tip with an extremely small aperture, on which metal-coating is performed to obtain a half-transparent conducting tip. A simultaneous SNOM/STM observation is performed for an Au (111) surface, where the evanescent field standing on the tip vicinity through the aperture is scattered by the local structures of the sample and the far-field component of the scattered light is collected as an optical signal. The distance con-trol is carried out under constant current condition in order to separate the optical properties from surface topography. λ/100 optical resolution and the identical channel transport both for electrons and photons are achieved.