Hillenbrand R, Keilmann F
Max-Planck-Institut für Biochemie, 82152 Martinsried, Germany.
Phys Rev Lett. 2000 Oct 2;85(14):3029-32. doi: 10.1103/PhysRevLett.85.3029.
Optical phase contrast has for the first time been observed on a nanometer scale, with a near-field microscope of scattering type that maps the complete optical field of amplitude and phase. Backed by quasielectrostatic theory, we demonstrate the significance and experimental accessibility of even complex optical constants on a subwavelength scale. Further, our method can separate the near-field response from background artifacts and thus is expected to enable nanoscale optical mapping of even topography-rich objects such as resonant clusters and macromolecules.
利用散射型近场显微镜首次在纳米尺度上观察到光学相位对比度，该显微镜可绘制振幅和相位的完整光场。在准静电理论的支持下，我们证明了在亚波长尺度上即使是复杂光学常数的重要性和实验可及性。此外，我们的方法可以将近场响应与背景伪像分离，因此有望实现对诸如共振簇和大分子等具有丰富形貌的物体进行纳米级光学成像。
