采用全量子非微扰散射理论,研究了周期量级微波频率激光脉冲中高激发里德堡态铷原子光电离的不对称现象.发现了光电子角分布的不对称性,这一不对称性由电离过程中不同跃迁通道之间的干涉引起.讨论了光电子角分布的不对称性对载波-包络(Carrier-envelope,CE)相位、脉冲宽度及光电子能量的依赖性,发现光电子角分布的不对称性随CE相位、脉冲宽度及光电子能量的变化有显著变化.这一研究证实了最近的实验观测,为微波频率光学范畴内CE相位的测量及光电子角分布的控制提供了一种有效的方法.
参考文献
| [1] | Stuart B C,Perry M D,Miller J,et al.125 TW Ti:sapphire/Nd:glass laser system[J].Opt.Lett.,1997,22(4):242-244. |
| [2] | Schenkel B,Biegert J,Keller U,et al.Generation of 3.8 fs pulses from adaptive compression of a cascaded hollow fiber supercontinuum[J].Opt.Lett.,2003,28(20):1987-1989. |
| [3] | Yakovlev V S,Dombi P,Tempea G,et al.Phase-stabilized 4 fs pulses at the full oscillator repetition rate of a photoemission experiment[J].Appl.Phys.B,2003,76(3):329. |
| [4] | He X F,Liu A H,Hao D S.Electron acceleration based on the inverse multi-photon nonlinear Compton scattering in the extra-intense stationary laser field[J].Chinese Journal of Quantum Electronics (量子电子学报),2009,26(6):664-667 (in Chinese). |
| [5] | Milosevic D B,Paulus G G,Bauer D,et al.Above-threshold ionization by few-cycle pulses[J].J.Phys.B,2006,39(14):R203. |
| [6] | Dietrich P,Krausz F,Corkum P B.Determining the absolute carrier phase of a few-cycle laser pulse[J].Opt.Lett.,2000,25 (1):16. |
| [7] | Milosevic D B,Paulus G G,Becker W.Phase-dependent effects of a few-cycle laser pulse[J].Phys.Rev.Lett.,2002,89(15):153001. |
| [8] | Zhang J T,Xu Z Z.Above-threshold ionization of Kr atoms in an infinite sequence of circularly polarized few-cycle pulses[J].Phys.Rev.A,2003,68 (1):013402. |
| [9] | Zhang X M,Zhang J T,Bai L H,et al.Verification of a scaling law in few-cycle laser pulses[J].Opt.Expr.,2005,13(22):8708. |
| [10] | Zhang J T,Bai L H,Gong S Q,et al.A scaling law of photonization in few-cycle regime[J].Opt.Expr.,2007,15(12):7261. |
| [11] | Paulus G G,Grasbon F,et al.Absolute-phase phenomena in photoionization with few-cycle pulses[J].Nature (London),2001,414(6860):182. |
| [12] | O'Keeffe K,Jochl P,Drexel H,et al.Carrier-envelope phase measurement using a non phase stable laser[J].Appl.Phys.B,2004,78(5):583. |
| [13] | Gurtler A,Robicheaux E,Zande W J,et al.Asymmetry in the strong-field ionization of Rydberg atoms by few-cycle pulses[J].Phys.Rev.Lett.,2004,92 (3):033002. |
| [14] | Guo D S,Aberg T,Creasemann B.Scattering theory of multiphoton ionization in strong fields[J].Phys.Rev.A,1989,40(6):4997. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%