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利用飞秒光电子影像技术研究了碘甲烷分子在飞秒强激光场作用下的多光子电离动力学, 在实验上实现了运用飞秒强场多光子电离技术对多原子分子离子的振动量子态进行光学操控. 本文提高了飞秒激光的强度, 从1.6×1013 W/cm2提高到2.5×1013 W/cm2. 在增大的激光强度范围内, 发现了新的能量组分, 并对此进行归属. 通过采集光电离的光电子影像可以得到强场电离后光电子的动能分布和角度分布两方面的信息, 前期的研究主要侧重于讨论光电子动能随光强的变化, 本文重点讨论了光电子角度分布随光强的变化, 通过观察光电子角度分布的变化趋势对振动量子态调控机理进一步认识.The dynamics of multi-photon ionization of CH3I under strong field has been studied experimentally by femtosecond photoelectron imaging. Ultrafast optical control of the vibrational excitation in a polyatomic ion by strong field multi-photon ionization is experimentally realized. The present work enhances the intensity of the ionization beam from 1.6×1013 to 2.5×1013 W/cm2. In the order of this higher field, a new energy component is observed and attributed. From the photoelectron imaging, photoelectron kinetic energy distributions and the photoelectron angular distributions are obtained. The discussions of the previous letter are mostly based on the photoelectron kinetic energy information, and the present study emphasizes on the trend of the photoelectron angular anisotropy. More detailed dynamics on vibrational optical control is further explored.
[1] Smith S J, Knight P L 1988 Multiphoton Processes (Cambridge: Cambridge University Press)
[2] Freeman R R, Bucksbaum P H, Milchberg H, Darack S, Schumacher D, Geusic M E 1987 Phys. Rev. Lett. 59 1092
[3] Freeman R R, Bucksbaum P H 1991 J. Phys. B: At. Mol. Opt. Phys. 24 325
[4] Kang H P, Wang C L, Lin Z Y, Chen Y J, Wu M Y, Quan W, Liu H P, Liu X J 2011 Chin. Phys. Lett. 28 083201
[5] Lin Z Y, Wu M Y, Quan W, Liu X J, Chen J, Cheng Y 2014 Chin. Phys. B 23 023201
[6] Alber G 1989 Phys. Rev. A 40 1321
[7] Potvliege R M, Vucic S 2006 Phys. Scr. 74 55
[8] Mevel E, Breger P, Trainham R, Petite G, Agostini P, Chambaret J P, Migus A, Antonetti A 1992 J. Phys. B: At. Mol. Opt. Phys. 25 401
[9] Posthumus J H 2004 Rep. Prog. Phys. 67 623
[10] Urbain X, Fabre B, Staicu-Casagrande E M, Ruette N, Andrianarijaona V M, Jureta J, Posthumus J H 2004 Phys. Rev. Lett. 92 163004
[11] Posthumus J H, Fabre B, Cornaggia C, Ruette N, Urbain X 2008 Phys. Rev. Lett. 101 233004
[12] Liu Y, Gerber T, Radi P, Sych Y, Knopp G 2014 Chem. Phys. Lett. 610–611 153
[13] Liu Y, Knopp G, Hemberger P, Sych Y, Radi P, Boedi A, Gerber T 2013 Phys. Chem. Chem. Phys. 15 18101
[14] Liu Y, Gerber T, Radi P, Sych Y, Knopp G 2013 Opt. Express 21 16639
[15] Liu Y Z, Xiao S R, Zhang C Y, Zheng G G, Chen Y Y 2012 Acta Phys. Sin. 61 193301 (in Chinese) [刘玉柱, 肖韶荣, 张成义, 郑改革, 陈云云 2012 物理学报 61 193301]
[16] Eppink A T J B, Parker D H 1999 J. Chem. Phys. 110 832
[17] Walser A M, Meisinger M, Radi P, Gerber T, Knopp G 2009 Phys. Chem. Chem. Phys. 11 8456
[18] Gerber T, Liu Y, Knopp G, Hemberger P, Boedi A, Radi P, Sych Y 2013 Rev. Sci. Instrum. 84 033101
[19] Yang C N 1948 Phys. Rev. 74 764
[20] Seideman T 1999 Phys. Rev. Lett. 83 4971
[21] Reid K L 2003 Annu. Rev. Phys. Chem. 54 397
[22] Suzuki Y I, Horio T, Fuji T, Suzuki T 2011 J. Chem. Phys. 134 184313
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[1] Smith S J, Knight P L 1988 Multiphoton Processes (Cambridge: Cambridge University Press)
[2] Freeman R R, Bucksbaum P H, Milchberg H, Darack S, Schumacher D, Geusic M E 1987 Phys. Rev. Lett. 59 1092
[3] Freeman R R, Bucksbaum P H 1991 J. Phys. B: At. Mol. Opt. Phys. 24 325
[4] Kang H P, Wang C L, Lin Z Y, Chen Y J, Wu M Y, Quan W, Liu H P, Liu X J 2011 Chin. Phys. Lett. 28 083201
[5] Lin Z Y, Wu M Y, Quan W, Liu X J, Chen J, Cheng Y 2014 Chin. Phys. B 23 023201
[6] Alber G 1989 Phys. Rev. A 40 1321
[7] Potvliege R M, Vucic S 2006 Phys. Scr. 74 55
[8] Mevel E, Breger P, Trainham R, Petite G, Agostini P, Chambaret J P, Migus A, Antonetti A 1992 J. Phys. B: At. Mol. Opt. Phys. 25 401
[9] Posthumus J H 2004 Rep. Prog. Phys. 67 623
[10] Urbain X, Fabre B, Staicu-Casagrande E M, Ruette N, Andrianarijaona V M, Jureta J, Posthumus J H 2004 Phys. Rev. Lett. 92 163004
[11] Posthumus J H, Fabre B, Cornaggia C, Ruette N, Urbain X 2008 Phys. Rev. Lett. 101 233004
[12] Liu Y, Gerber T, Radi P, Sych Y, Knopp G 2014 Chem. Phys. Lett. 610–611 153
[13] Liu Y, Knopp G, Hemberger P, Sych Y, Radi P, Boedi A, Gerber T 2013 Phys. Chem. Chem. Phys. 15 18101
[14] Liu Y, Gerber T, Radi P, Sych Y, Knopp G 2013 Opt. Express 21 16639
[15] Liu Y Z, Xiao S R, Zhang C Y, Zheng G G, Chen Y Y 2012 Acta Phys. Sin. 61 193301 (in Chinese) [刘玉柱, 肖韶荣, 张成义, 郑改革, 陈云云 2012 物理学报 61 193301]
[16] Eppink A T J B, Parker D H 1999 J. Chem. Phys. 110 832
[17] Walser A M, Meisinger M, Radi P, Gerber T, Knopp G 2009 Phys. Chem. Chem. Phys. 11 8456
[18] Gerber T, Liu Y, Knopp G, Hemberger P, Boedi A, Radi P, Sych Y 2013 Rev. Sci. Instrum. 84 033101
[19] Yang C N 1948 Phys. Rev. 74 764
[20] Seideman T 1999 Phys. Rev. Lett. 83 4971
[21] Reid K L 2003 Annu. Rev. Phys. Chem. 54 397
[22] Suzuki Y I, Horio T, Fuji T, Suzuki T 2011 J. Chem. Phys. 134 184313
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