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利用三态模型和含时波包法, 研究了K2分子在强飞秒抽运-探测激光场中延时、脉宽以及抽运波长对光电子能谱和波包动力学过程的影响. 研究结果表明, 激光场强较弱或者脉宽较短都可能不发生Autler-Townes分裂, 光电子能谱呈现出单峰结构; 延时和抽运波长的改变影响能峰结构、位置和相对峰高; 对于不同的抽运波长, 波包的振动周期是相同的, 波包振荡幅度随脉宽增大而减小; 光电子能谱反映了波包动力学信息. 研究结果可以为实验上实现分子的光控制以及量子调控过程提供一定的参考, 并为进一步研究K2分子的动力学性质提供有用的信息.We investigate the effect of delay time, pulse width and pump wavelength on photoelectron spectra and wave packet forming process of the three-level K2 molecules via time-dependent wave packet approach. There is no Autler-Townes splitting for weaker pump intensity or shorter pulse width. Delay time and pump wavelength can affect peak structure, position, and relative height. The vibration period of wave packet does not vary with pump wavelength, while the oscillating amplitude decreases with increasing pulse width. Results may provide important basis for realizing the optical control of molecules experimentally.
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Keywords:
- three-state ladder K2 molecules /
- time-dependent wave packet approach /
- photoelectron spectra /
- wave packet dynamic processes
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[2] Stolow A, Bragg A E, Neumark D M 2004 Chem. Rev. 104 1719
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[11] Yuan K J, Sun Z G, Cong S L, Lou N Q 2006 Phys. Rev. A 74 043421
[12] Liu Y F, Liu R Q, Ding J X 2009 Chin. Phys. Lett. 26 073301
[13] Liu Y F, Liu R Q, Ding J X 2010 Chin. Phys. B 19 033301
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[15] von den Hoff P, Kowalewski M, de Vivie-Riedle R 2011 Faraday Disscuss. 153 159
[16] Yao H B, Zheng Y J 2012 Chin. Phys. B 21 023302
[17] Yao H B, Li W L, Zhang J, Peng M 2014 Acta Phys. Sin. 63 178201 (in Chinese) [姚洪斌, 李文亮, 张季, 彭敏 2014 63 178201]
[18] Peng Y G, Zheng Y J 2009 Phys. Rev. A 80 043831
[19] Yuan K J, Sun Z G, Cong S L, Wang S M, Yu J, Lou N Q 2005 Chem. Phys. 316 245
[20] Yao H B, Lin S Y, Zhen Y J 2011 J. Theor. Comp. Chem. 10 509
[21] Yao H B, Zheng Y J 2011 Acta Phys. Sin. 60 128201 (in Chinese) [姚洪斌, 郑雨军 2011 60 128201]
[22] Zhang M, Tang T T, Zhang C M 2014 Acta Phys. Sin. 63 023302 (in Chinese) [张敏, 唐田田, 张朝民 2014 63 023302]
[23] Schwoerer H, Pausch R, Heid M, Heid M, Engel V, Kiefer W 1997 J. Chem. Phys. 107 9749
[24] Zhang H, Han K L, Zhao Y, He G Z, Nan L Q 1997 Chem. Phys. Lett. 271 204
[25] Xie T X, Zhang Y, Zhao M Y, Han K L 2003 Phys. Chem. Chem. Phys. 5 2034
[26] Hu J, Han K L, He G Z 2005 Phys. Rev. Lett. 95 123001
[27] Chu T S, Zhang Y, Han K L 2006 Int. Rev. Phy. Chem. 25 201
[28] Baumert T, Engel V, Meier C, Gerber G 1992 Chem. Phys. Lett. 200 488
[29] Li Y J, Jiang W Y, Khait Y G, Hoffmann M R 2011 J. Chem. Phys. 134 174108
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[1] Henriksen N E, Engel V 2001 Int. Rev. Phys. Chem. 20 93
[2] Stolow A, Bragg A E, Neumark D M 2004 Chem. Rev. 104 1719
[3] Meier C, Engel V 1994 Phys. Rev. Lett. 73 3207
[4] Frohnmeyer T, Baumert T 2000 Appl. Phys. B 71 259
[5] Wollenhaupt M, Assion A, Bazhan O, Liese D, Sarpe-Tudoran C, Baumert T 2002 Appl. Phys. B 74 S121
[6] Hu W H, Yuan K J, Han Y C, Shu C C, Cong S L 2007 Chin. Phys. Lett. 24 1556
[7] Hu W H, Yuan K J, Han Y C, Shu C C, Cong S L 2010 Int. J. Quantum Chem. 110 1224
[8] Yao H B, Zheng Y J 2011 Phys. Chem. Chem. Phys. 13 8900
[9] Guo W, Lu X Q, Wang X L, Yao H B 2014 Europhys. Lett. 108 53002
[10] Sun Z G, Lou N Q 2003 Phys. Rev. Lett. 91 023002
[11] Yuan K J, Sun Z G, Cong S L, Lou N Q 2006 Phys. Rev. A 74 043421
[12] Liu Y F, Liu R Q, Ding J X 2009 Chin. Phys. Lett. 26 073301
[13] Liu Y F, Liu R Q, Ding J X 2010 Chin. Phys. B 19 033301
[14] Wollenhaupt M, Baumert T 2006 J. Photochem. Photobiol. A 180 248
[15] von den Hoff P, Kowalewski M, de Vivie-Riedle R 2011 Faraday Disscuss. 153 159
[16] Yao H B, Zheng Y J 2012 Chin. Phys. B 21 023302
[17] Yao H B, Li W L, Zhang J, Peng M 2014 Acta Phys. Sin. 63 178201 (in Chinese) [姚洪斌, 李文亮, 张季, 彭敏 2014 63 178201]
[18] Peng Y G, Zheng Y J 2009 Phys. Rev. A 80 043831
[19] Yuan K J, Sun Z G, Cong S L, Wang S M, Yu J, Lou N Q 2005 Chem. Phys. 316 245
[20] Yao H B, Lin S Y, Zhen Y J 2011 J. Theor. Comp. Chem. 10 509
[21] Yao H B, Zheng Y J 2011 Acta Phys. Sin. 60 128201 (in Chinese) [姚洪斌, 郑雨军 2011 60 128201]
[22] Zhang M, Tang T T, Zhang C M 2014 Acta Phys. Sin. 63 023302 (in Chinese) [张敏, 唐田田, 张朝民 2014 63 023302]
[23] Schwoerer H, Pausch R, Heid M, Heid M, Engel V, Kiefer W 1997 J. Chem. Phys. 107 9749
[24] Zhang H, Han K L, Zhao Y, He G Z, Nan L Q 1997 Chem. Phys. Lett. 271 204
[25] Xie T X, Zhang Y, Zhao M Y, Han K L 2003 Phys. Chem. Chem. Phys. 5 2034
[26] Hu J, Han K L, He G Z 2005 Phys. Rev. Lett. 95 123001
[27] Chu T S, Zhang Y, Han K L 2006 Int. Rev. Phy. Chem. 25 201
[28] Baumert T, Engel V, Meier C, Gerber G 1992 Chem. Phys. Lett. 200 488
[29] Li Y J, Jiang W Y, Khait Y G, Hoffmann M R 2011 J. Chem. Phys. 134 174108
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