Vahid Sandoghdar,
U. Drodofsky,
Th. Schulze,
B. Brezger,
M. Drewsen,
T. Pfau,
Jürgen Mlynek
Journal of Modern Optics
44
1883-1898
(1997)
| Journal
We discuss the fabrication of various one and two-dimensional chromium nanostructures. A chromium atomic beam effusing out of a thermal oven is first transversally laser cooled. This well-collimated beam is then structured and focused by the optical dipole force in a periodic light field. By introducing a substrate at the focus of the atomic beam we are able to capture this pattern directly. We discuss a few applications and challenges of this young lithography technique.
Reflection scanning near-field optical microscopy with uncoated fiber tips: How good is the resolution really?
Vahid Sandoghdar,
S. Wegscheider,
G. Krausch,
Jürgen Mlynek
Journal of Applied Physics
81
2499-2503
(1997)
| Journal
We have investigated the optical resolution of a scanning near-field optical microscope in reflection collection mode using an uncoated fiber tip. We demonstrate that the apparent resolution in the optical signal (better than 70 nm) is a topography-induced effect. We believe that the purely optical resolution is only of the order of lambda/2 and diffraction limited. (C) 1997 American Institute of Physics.
Kontakt
Abteilung Nanooptik Prof. Vahid Sandoghdar
Max-Planck-Institut für die Physik des Lichts Staudtstr. 2 91058 Erlangen
