Simple formula for the ionization rate of diatomic molecules in an intense laser field using the velocity gauge

doi:10.1088/1674-1056/22/8/084203

中国物理B ›› 2013, Vol. 22 ›› Issue (8): 84203-084203.doi: 10.1088/1674-1056/22/8/084203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Simple formula for the ionization rate of diatomic molecules in an intense laser field using the velocity gauge

唐增华, 李永庆, 马凤才

Department of Physics, Liaoning University, Shenyang 110036, China

收稿日期:2012-11-12 修回日期:2012-12-21 出版日期:2013-06-27 发布日期:2013-06-27
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11274149) and the Natural Science Foundation of Liaoning Province, China (Grant No. 20121032).

Simple formula for the ionization rate of diatomic molecules in an intense laser field using the velocity gauge

Tang Zeng-Hua (唐增华), Li Yong-Qing (李永庆), Ma Feng-Cai (马凤才)

Department of Physics, Liaoning University, Shenyang 110036, China

Received:2012-11-12 Revised:2012-12-21 Online:2013-06-27 Published:2013-06-27
Contact: Li Yong-Qing, Ma Feng-Cai E-mail:yqli@lnu.edu.cn; fcma@lnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11274149) and the Natural Science Foundation of Liaoning Province, China (Grant No. 20121032).

摘要/Abstract

摘要： We derive a general ionization rate formula for the system of diatomic molecules in the velocity gauge. A more concise expression of the photoionization rate in the tunnel region is obtained for the first time. Comparisons are made among the different versions of strong-field approximation. The numerical study shows that the ionization rate in the velocity gauge is underestimated by a few orders compared with that in the length gauge. Our simple formula of ionization rate may provide an insight into the ionization mechanism for the system of diatomic molecules.

关键词: strong-field approximation, gauge invariance, tunnel ionization

Abstract: We derive a general ionization rate formula for the system of diatomic molecules in the velocity gauge. A more concise expression of the photoionization rate in the tunnel region is obtained for the first time. Comparisons are made among the different versions of strong-field approximation. The numerical study shows that the ionization rate in the velocity gauge is underestimated by a few orders compared with that in the length gauge. Our simple formula of ionization rate may provide an insight into the ionization mechanism for the system of diatomic molecules.

Key words: strong-field approximation, gauge invariance, tunnel ionization

中图分类号: (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)

42.50.Hz

33.80.Eh (Autoionization, photoionization, and photodetachment)

唐增华, 李永庆, 马凤才. Simple formula for the ionization rate of diatomic molecules in an intense laser field using the velocity gauge[J]. 中国物理B, 2013, 22(8): 84203-084203.

Tang Zeng-Hua (唐增华), Li Yong-Qing (李永庆), Ma Feng-Cai (马凤才). Simple formula for the ionization rate of diatomic molecules in an intense laser field using the velocity gauge[J]. Chin. Phys. B, 2013, 22(8): 84203-084203.

参考文献 34

[1]	Giusti-Suzor A, He X, Atabek O and Mies F H 1990 Phys. Rev. Lett. 64 515
[2]	Wu Y, Ye H L, Zhang J T and Guo D S 2012 Chin. Phys. B 21 053201
[3]	Zhang D D, Ni Q, Luo S Z, Zhang J, Liu H, Xu H F, Jin M X and Ding D J 2011 Chin. Phys. Lett. 28 033301
[4]	Hao X L, Li W D, Liu J and Chen J 2012 Chin. Phys. B 21 083304
[5]	Normand D and Schmidt M 1996 Phys. Rev. A 53 R1958
[6]	Li Y, Yang S P, Jia X Y and Chen J 2010 Chin. Phys. B 19 043303
[7]	Wang Y Q, Chen D Y, Xia Y Q, Fan R W and Lu F M 2010 Chin. Phys. B 19 023203
[8]	Litvinyuk I V, Lee K F, Dooley P W, Rayner D M, Villeneuve D M and Corkum P B 2003 Phys. Rev. Lett. 90 233003
[9]	Muth-Böhm J, Becker A and Faisal F H M 2000 Phys. Rev. Lett. 85 2280
[10]	Tong X M, Zhao Z X and Lin C D 2002 Phys. Rev. A 66 033402
[11]	Usachenko V I and Chu S I 2005 Phys. Rev. A 71 063410
[12]	Kjeldsen T K and Madsen L B 2004 J. Phys. B 37 2033
[13]	Keldysh L V 1965 Sov. Phys. JETP 20 1307
[14]	Faisal F H M 1973 J. Phys. B 6 L89
[15]	Reiss H R 1980 Phys. Rev. A 22 1786
[16]	Chen S G 1995 Chin. Phys. Lett. 12 273
[17]	Faisal F H M 2007 Phys. Rev. A 75 063412
[18]	Klaiber M, Hatsagortsyan K Z and Keitel C H 2006 Phys. Rev. A 73 053411
[19]	Faisal F H M 2007 J. Phys. B 40 F145
[20]	Bauer J H 2011 Phys. Rev. A 84 025403
[21]	Vanne Y V and Saenz A 2009 Phys. Rev. A 79 023421
[22]	Leone C, Bivona S, Burlon R, Morales F and Ferrante G 1989 Phys. Rev. A 40 1828
[23]	Milošević D B 2006 Phys. Rev. A 74 063404
[24]	Chen Y J and Hu B 2009 Phys. Rev. A 80 033408
[25]	Kjeldsen T K and Madsen L B 2005 Phys. Rev. A 71 023411
[26]	Zhang B and Zhao Z X 2010 Phys. Rev. A 82 035401
[27]	Talebpour A, Chien C Y and Chin S L 1996 J. Phys. B 29 L677
[28]	DeWitt M J, Wells E and Jones R R 2001 Phys. Rev. Lett. 87 153001
[29]	Grasbon F, Paulus G G, Chin S L, Walther H, Muth-Böhm J, Becker A and Faisal F H M 2001 Phys. Rev. A 63 041402
[30]	Ma F C, Li Y Q, Song P and Zhao M Y (unpublished)
[31]	Mishima K, Hayashi M, Yi J, Lin S H, Selzle H L and Schlag E W 2002 Phys. Rev. A 66 033401
[32]	Cacelli I, Moccia R and Rizzo A 1998 Phys. Rev. A 57 1895
[33]	Lucchese R R, Raseev G and McKoy V 1982 Phys. Rev. A 25 2572
[34]	Gribakin G F and Kuchiev M Y 1997 Phys. Rev. A 55 3760

Simple formula for the ionization rate of diatomic molecules in an intense laser field using the velocity gauge

Simple formula for the ionization rate of diatomic molecules in an intense laser field using the velocity gauge

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 34

相关文章 2

Metrics

本文评价

推荐阅读 0

[1]	杜洪川, 朱鹏佳, 孙少华, 刘作业, 李露, 马玲玲, 胡碧涛. Dynamics simulation on interaction of intense laser pulses with atomic clusters[J]. 中国物理B, 2009, 18(6): 2426-2431.
[2]	田旭, 赵中云, 黎明发. Coherent Landau states with gauge invariance[J]. 中国物理B, 2004, 13(10): 1649-1651.