Abstract
We propose an all-optical method for achieving molecular orientation by two-step excitation with visible femtosecond laser (fs) and terahertz (THz) pulses. First, the femtosecond laser pulse induces off-resonant impulsive Raman excitation to create rotational wavepackets. Next, a delayed intense THz pulse effectively induces resonant dipole transition between neighboring rotational states. By controlling the intensities of both the pulses and the time delay, we can create rotational wavepackets consisting of states with different parities in order to achieve a high degree of molecular orientation under a field-free condition. We numerically demonstrate that the highest degree of orientation of \(\left < \cos \theta \right > > 0.8\) in HBr molecules is feasible under experimentally available conditions.
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References
H. Stapelfeldt, T. Seideman, Rev. Mod. Phys. 75, 543 (2003)
H.J. Loesch, A. Remscheid, J. Chem. Phys. 93, 4779 (1990)
D.H. Parker, P.B. Bernstein, Annu. Rev. Phys. Chem. 40, 561 (1989)
B. Friedrich, D. Herschbach, J. Chem. Phys. 111, 6157 (1999)
H. Sakai et al., Phys. Rev. Lett. 90, 083001 (2003); L. Holmegaard et al., Phys. Rev. Lett. 102, 023001 (2009)
S. De et al., Phys. Rev. Lett. 103, 153002 (2009); K. Oda et al., Phys. Rev. Lett. 104, 213901 (2010)
O. Ghafur et al., Nat. Phys. 5, 289 (2009)
M. Machholm, N.E. Henriksen, Phys. Rev. Lett. 87, 193001 (2001); C.M. Dion et al., Eur. Phys. J. D 14, 249 (2001); D. Sugny et al., Phys. Rev. A 69, 033402 (2004); E. Gershnabel, I.S. Averbukh, R.J. Gordon, Phys. Rev. A 74, 053414 (2006)
D. Daems et al., Phys. Rev. Lett. 94, 153003 (2005)
K.-L. Yeh et al., Appl. Phys. Lett. 90, 171121 (2007)
S. Watanabe et al., Opt. Express 19, 1528 (2011)
NIST Database http://webbook.nist.gov/chemistry/
J.O. Hirschfelder et al., Molecular Theory of Gases and Liquids (Wiley, New York, 1954)
Acknowledgements
This research was partially supported by the Photon Frontier Network Program of the Ministry of Education, Culture, Sports, Science and Technology, Japan.
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Kitano, K., Ishii, N., Itatani, J. (2012). Molecular Orientation by Intense Visible and THz Optical Pulses. In: Yamanouchi, K., Katsumi, M. (eds) Multiphoton Processes and Attosecond Physics. Springer Proceedings in Physics, vol 125. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28948-4_40
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DOI: https://doi.org/10.1007/978-3-642-28948-4_40
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