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

LASER TECHNOLOGY > 2015 > 39(6): 735-740. > DOI: 10.7510/jgjs.issn.1001-3806.2015.06.001

YANG Minghui, JIN Qi, LIU Jinsong, WANG Kejia, YANG Zhengang. CO molecular orientation controlled by combination of chirped THz pulse and femtosecond laser pulse[J]. LASER TECHNOLOGY, 2015, 39(6): 735-740. DOI: 10.7510/jgjs.issn.1001-3806.2015.06.001

Citation:

PDF (1451 KB)

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

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

More Information

Received Date: January 12, 2015
Revised Date: March 15, 2015
Published Date: November 24, 2015

Graphical Abstract

Abstract

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

FullText(HTML)

References (24)

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).

Cited By

Get Citation

PDF

XML

Article views (3) PDF downloads (16)

Turn off MathJax

Article Contents

Abstract

References

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

Abstract

References

Catalog

Links：

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

Abstract

References

Catalog

Links：

Export File

Citation

Format

Content