论文标题
动量光谱法，用于在椭圆极化激光场中冷rubidium的多个电离
Momentum spectroscopy for multiple ionization of cold rubidium in the elliptically polarized laser field
论文作者
论文摘要
Employing recent developed magneto-optical trap recoil ion momentum spectroscopy (MOTRIMS) combining cold atom, strong laser pulse, and ultrafast technologies, we study momentum distributions of the multiply ionized cold rubidium (Rb) induced by the elliptically polarized laser pulses (35 fs, $1.3 \times 10^{15}$ W/cm$^2$).记录了高分子n = 4的RBN+离子的完整矢量动量，分辨率极高（对于RB $^+ $，为0.12 a.u.）。随着椭圆度从线性到圆极化的不同，在动量分布中显示的特征多带的变化被定性地解释为经典的过度障碍电离模型。当前的冷碱原子的动量光谱法呈现出新型的强场现象，超出了贵重气体。
Employing recent developed magneto-optical trap recoil ion momentum spectroscopy (MOTRIMS) combining cold atom, strong laser pulse, and ultrafast technologies, we study momentum distributions of the multiply ionized cold rubidium (Rb) induced by the elliptically polarized laser pulses (35 fs, $1.3 \times 10^{15}$ W/cm$^2$). The complete vector momenta of Rbn+ ions up to charge state n = 4 are recorded with extremely high resolution (0.12 a.u. for Rb$^+$). Variations of characteristic multi-bands displayed in momentum distributions, as the ellipticity varies from the linear to circular polarization, are interpreted qualitatively with the classical over-barrier ionization model. Present momentum spectroscopy of cold heavy alkali atoms presents novel strong-field phenomena beyond the noble gases.
