CO molecular orientation controlled by combination of chirped THz pulse and femtosecond laser pulse

YANG Minghui; JIN Qi; LIU Jinsong; WANG Kejia; YANG Zhengang

doi:10.7510/jgjs.issn.1001-3806.2015.06.001

Volume 39 Issue 6

Sep. 2015

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CO molecular orientation controlled by combination of chirped THz pulse and femtosecond laser pulse

1.
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science & Technology, Wuhan 430074, China

Corresponding author: WANG Kejia, wkjtode@sina.com ;
Received Date: 2015-01-13
Accepted Date: 2015-03-16

Abstract

In order to study the orientation behaviors of CO molecules induced by chirped terahertz pulse, the time-dependent Schrdinger equation was solved by means of rigid rotor approximation for theoretical analysis. In order to achieve high degree of molecular orientation in chirped terahertz pulse at a low intensity, the method by utilizing chirped terahertz pulse in combination with femtosecond laser pulse was proposed. The results show that the molecular orientation degree can be enhanced about 81%, and that the orientation efficiency decreases with the rise of temperature in finite temperature range. Compared with the few-cycle terahertz pulse, chirped terahertz pulse has more advantages in inducing molecular orientation. The result is meaningful to enhance the CO orientation degree.
- laser physics,
- molecular orientation,
- rigid rotor model,
- chirped terahertz pulse

References

[1]	STAPELFELDT H, SEIDEMAN T. Colloquium: aligning molecules with strong laser pulses[J]. Reviews of Modern Physics, 2003, 75(2): 543-557.
[2]	HERSCHACH D. Chemical physics: molecular clouds, clusters, and corrals[J]. Reviews of Modern Physics, 1999, 71(2): S411-S418.
[3]	LI H, RAY D, DE S, et al. Orientation dependence of the ionization of CO and NO in an intense femtosecond two-color laser field[J]. Physical Review, 2011, A84(4): 043429.
[4]	HANSAN J L, STAPELFELDT H, DIMITROVSKI D, et al. Time-resolved photoelectron angular distributions from strong-field ionization of rotating naphthalene molecules[J]. Physical Review Letters, 2011, 106(7): 073001.
[5]	IVANOV M Y, MARANGOS J P. Time-resolved imaging of atomic-scale electron and nuclear dynamics[J]. Journal of Modern Optics, 2007, 54(7):899-903.
[6]	WU J, LU P, LIU J, et al. Ultrafast optical imaging by molecular wakes[J]. Applied Physics Letters, 2010, 97(16): 161106.
[7]	KRAMER K H, BERNSTEIN R B. Focusing and orientation of symmetric-top molecules with the electric six-pole field[J]. Journal of Chemical Physics, 1965, 42(2): 767-770.
[8]	HAIN T D, MOISION R M, CURTISS T J. Hexapole state-selection and orientation of asymmetric top molecules: CH2F2[J]. Journal of Chemical Physics, 1999,111(15): 6797-6806.
[9]	FRIEDRICH B, HERSCHBACH D R. Spatial orientation of molecules in strong electric fields and evidence for pendularstates[J]. Nature,1991, 353:412-414.
[10]	LOESCH H J, REMSCHEID A. Brute force in molecular reaction dynamics: a novel technique for measuring steric effects[J]. Journal of Chemical Physics, 1990, 93(7): 4779-4790.
[11]	FRIEDRICH B, HERSCHBACH D R. On the possibility of orienting rotationally cooled polar molecules in an electric field[J].European Physical Journal, 1991, D18(2): 153-161.
[12]	FRIEDRICH B, HERSCHBACH D. Enhanced orientation of polar molecules by combined electrostatic and nonresonant induced dipole forces[J]. Journal of Chemical Physics, 1999, 111(14):6157-6160.
[13]	BUCK U, FARNIK M. Oriented xenon hydride molecules in the gas phase[J]. International Reviews in Physical Chemistry, 2006, 25(4): 583-612.
[14]	GOBAN A, MINEMOTO S, SAKAI H. Laser-field-free molecular orientation[J]. Physical Review Letters, 2008, 101(1): 013001.
[15]	KANAI T, SAKAI H. Numerical simulations of molecular orientation using strong, nonresonant, two-color laser fields[J].Journal of Chemical Physics,2001,115(12): 5492-5497.
[16]	ZHANG S, SHI J, ZHANG H, et al. Field-free molecular orientation by a multicolor laser field[J]. Physical Review, 2011, A83(2): 023416.
[17]	QIN C, TANG Y, WANG Y, et al. Field-free orientation of CO by a terahertz few-cycle pulse[J]. Physical Review, 2012, A85(5): 053415.
[18]	DAEMS D, GUERIN S, SUGNY D, et al. Efficient and long-lived field-free orientation of molecules by a single hybrid short pulse[J]. Physical Review Letters, 2005, 94(15): 153003.
[19]	GERSHNALEL E, AVERBUKH I S, GORDON R J. Enhanced molecular orientation induced by molecular antialignment[J]. Physical Review, 2006, A74(5): 053414.
[20]	YANG J, CHEN M, YU J, et al. Field-free molecular orientation with chirped laser pulse[J]. European Physical Journal, 2012, D 66(4): 1-5.
[21]	SHU C C, YUAN K J, HU W H, et al. Field-free molecular orientation with terahertz few-cycle pulses[J]. Journal of Chemical Physics, 2010, 132(24): 244311.
[22]	KITANO K, ISHII N, ITATANI J. High degree of molecular orientation by a combination of THz and femtosecond laser pulses[J]. Physical Review, 2011, A84(5): 053408.
[23]	SUGNY D, KELLER A, ATADEK O, et al. Reaching optimally oriented molecular states by laser kicks[J]. Physical Review, 2004, A69(3): 033402.
[24]	ZHAO S H, SHI L, LI YU J, et al. Filamentation of femtosecond laser pulse in atmosphere and its application[J]. Laser Technology, 2003, 27(3):256-258(in Chinese).

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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CO molecular orientation controlled by combination of chirped THz pulse and femtosecond laser pulse

Corresponding author: WANG Kejia, wkjtode@sina.com;

1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science & Technology, Wuhan 430074, China

Received Date: 2015-01-13

Accepted Date: 2015-03-16

Available Online: 2015-11-25

Abstract: In order to study the orientation behaviors of CO molecules induced by chirped terahertz pulse, the time-dependent Schrdinger equation was solved by means of rigid rotor approximation for theoretical analysis. In order to achieve high degree of molecular orientation in chirped terahertz pulse at a low intensity, the method by utilizing chirped terahertz pulse in combination with femtosecond laser pulse was proposed. The results show that the molecular orientation degree can be enhanced about 81%, and that the orientation efficiency decreases with the rise of temperature in finite temperature range. Compared with the few-cycle terahertz pulse, chirped terahertz pulse has more advantages in inducing molecular orientation. The result is meaningful to enhance the CO orientation degree.

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Reference (24)

[1]	STAPELFELDT H, SEIDEMAN T. Colloquium: aligning molecules with strong laser pulses[J]. Reviews of Modern Physics, 2003, 75(2): 543-557.
[2]	HERSCHACH D. Chemical physics: molecular clouds, clusters, and corrals[J]. Reviews of Modern Physics, 1999, 71(2): S411-S418.
[3]	LI H, RAY D, DE S, et al. Orientation dependence of the ionization of CO and NO in an intense femtosecond two-color laser field[J]. Physical Review, 2011, A84(4): 043429.
[4]	HANSAN J L, STAPELFELDT H, DIMITROVSKI D, et al. Time-resolved photoelectron angular distributions from strong-field ionization of rotating naphthalene molecules[J]. Physical Review Letters, 2011, 106(7): 073001.
[5]	IVANOV M Y, MARANGOS J P. Time-resolved imaging of atomic-scale electron and nuclear dynamics[J]. Journal of Modern Optics, 2007, 54(7):899-903.
[6]	WU J, LU P, LIU J, et al. Ultrafast optical imaging by molecular wakes[J]. Applied Physics Letters, 2010, 97(16): 161106.
[7]	KRAMER K H, BERNSTEIN R B. Focusing and orientation of symmetric-top molecules with the electric six-pole field[J]. Journal of Chemical Physics, 1965, 42(2): 767-770.
[8]	HAIN T D, MOISION R M, CURTISS T J. Hexapole state-selection and orientation of asymmetric top molecules: CH2F2[J]. Journal of Chemical Physics, 1999,111(15): 6797-6806.
[9]	FRIEDRICH B, HERSCHBACH D R. Spatial orientation of molecules in strong electric fields and evidence for pendularstates[J]. Nature,1991, 353:412-414.
[10]	LOESCH H J, REMSCHEID A. Brute force in molecular reaction dynamics: a novel technique for measuring steric effects[J]. Journal of Chemical Physics, 1990, 93(7): 4779-4790.
[11]	FRIEDRICH B, HERSCHBACH D R. On the possibility of orienting rotationally cooled polar molecules in an electric field[J].European Physical Journal, 1991, D18(2): 153-161.
[12]	FRIEDRICH B, HERSCHBACH D. Enhanced orientation of polar molecules by combined electrostatic and nonresonant induced dipole forces[J]. Journal of Chemical Physics, 1999, 111(14):6157-6160.
[13]	BUCK U, FARNIK M. Oriented xenon hydride molecules in the gas phase[J]. International Reviews in Physical Chemistry, 2006, 25(4): 583-612.
[14]	GOBAN A, MINEMOTO S, SAKAI H. Laser-field-free molecular orientation[J]. Physical Review Letters, 2008, 101(1): 013001.
[15]	KANAI T, SAKAI H. Numerical simulations of molecular orientation using strong, nonresonant, two-color laser fields[J].Journal of Chemical Physics,2001,115(12): 5492-5497.
[16]	ZHANG S, SHI J, ZHANG H, et al. Field-free molecular orientation by a multicolor laser field[J]. Physical Review, 2011, A83(2): 023416.
[17]	QIN C, TANG Y, WANG Y, et al. Field-free orientation of CO by a terahertz few-cycle pulse[J]. Physical Review, 2012, A85(5): 053415.
[18]	DAEMS D, GUERIN S, SUGNY D, et al. Efficient and long-lived field-free orientation of molecules by a single hybrid short pulse[J]. Physical Review Letters, 2005, 94(15): 153003.
[19]	GERSHNALEL E, AVERBUKH I S, GORDON R J. Enhanced molecular orientation induced by molecular antialignment[J]. Physical Review, 2006, A74(5): 053414.
[20]	YANG J, CHEN M, YU J, et al. Field-free molecular orientation with chirped laser pulse[J]. European Physical Journal, 2012, D 66(4): 1-5.
[21]	SHU C C, YUAN K J, HU W H, et al. Field-free molecular orientation with terahertz few-cycle pulses[J]. Journal of Chemical Physics, 2010, 132(24): 244311.
[22]	KITANO K, ISHII N, ITATANI J. High degree of molecular orientation by a combination of THz and femtosecond laser pulses[J]. Physical Review, 2011, A84(5): 053408.
[23]	SUGNY D, KELLER A, ATADEK O, et al. Reaching optimally oriented molecular states by laser kicks[J]. Physical Review, 2004, A69(3): 033402.
[24]	ZHAO S H, SHI L, LI YU J, et al. Filamentation of femtosecond laser pulse in atmosphere and its application[J]. Laser Technology, 2003, 27(3):256-258(in Chinese).

CO molecular orientation controlled by combination of chirped THz pulse and femtosecond laser pulse

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views