Ohdaira Y, Kijima K, Terasawa K, Kawai M, Hori H, Kitahara K
Department of Electronics, Yamanashi University, 4-3-11, Takeda, Kofu, Yamanashi, 400-8511, Japan.
J Microsc. 2001 Apr;202(Pt 1):255-60. doi: 10.1046/j.1365-2818.2001.00799.x.
Spin-sensitive optical near-field microscopy and spectroscopy are proposed based on the study on the conserved quantities in optical near-field interactions of atoms with dielectric surfaces. A two-step photoionization spectra of Cs atoms resolving hyperfine structures are demonstrated near a planar dielectric surface by using evanescent waves. These techniques of state/spin-selective excitation and highly sensitive detection, combined with the techniques of optical pumping, will open up possibilities of space- and polarization-sensitive detection of optical near-fields using atomic probes. This novel method provides us with a useful technique for the observation of polarization nature of the optical near-field and controlling the spin states of mesoscopic electronic systems.
基于对原子与电介质表面光学近场相互作用中守恒量的研究，提出了自旋敏感光学近场显微镜和光谱学方法。利用倏逝波在平面电介质表面附近展示了分辨超精细结构的铯原子两步光电离光谱。这些态/自旋选择性激发和高灵敏度检测技术，与光泵浦技术相结合，将开启使用原子探针进行光学近场的空间和偏振敏感检测的可能性。这种新方法为我们提供了一种用于观察光学近场偏振特性和控制介观电子系统自旋态的有用技术。
