MATTER-WAVE DIFFRACTION OFF NANO GRATINGS: QUANTUM EFFECTS

H. Oberst, Shigenori Kasashima, Fujio Shimizu +1 more

Vincent Lonij, Alexander D. Cronin, S. Lepoutre +4 more

Ralf Schützhold

Gerhard C. Hegerfeldt, Thorsten Köhler

Advances in micro-technology of the last years have made it possible to carry optics textbooks experiments over to atomic and molecular beams, such as diffraction by a double slit or transmission grating. The usual wave-optical approach gives a good qualitative description of these experiments. However, small deviations therefrom and sophisticated quantum mechanics yield new surprising insights on the size of particles and on their interaction with surfaces.

Hanzhuang Zhang, Gao Jin-Yue, 吉林大学物理系

We discussed transverse diffraction effects of probe and driving fields on the gain in the model of Raman driven four level atomic system. The calculated results showed that the spectrum of the probe field has different structure compared with that in plane wave approximation due to the transverse diffraction effects of light fields, and the optimum focal position of a focus lens for the maximum gain is in the vicinity of a sample cell.