Paulus GG, Grasbon F, Dreischuh A, Walther H, Kopold R, Becker W
Max-Planck-Institut fur Quantenoptik, 85748 Garching, Germany.
Phys Rev Lett. 2000 Apr 24;84(17):3791-4. doi: 10.1103/PhysRevLett.84.3791.
Measurements of energy-resolved angular distributions of electrons generated in above-threshold ionization of rare gases in a field with elliptical polarization are presented, with emphasis on the high-energy part of the spectra. The data show a second plateau at a specific angle with respect to the large component of the laser field. The results are compared to a calculation based on a strong-field rescattering approximation. This is interpreted in terms of the superposition of quantum trajectories. The second plateau is associated with the interference of electrons that do and that do not rescatter.
本文给出了在椭圆偏振场中稀有气体阈上电离产生的电子的能量分辨角分布测量结果，重点关注光谱的高能部分。数据显示在相对于激光场大分量的特定角度处存在第二个平台。将结果与基于强场再散射近似的计算进行了比较。这是根据量子轨迹的叠加来解释的。第二个平台与发生再散射和未发生再散射的电子的干涉有关。
